Category: Engineering

Categories
Blogging Engineering Learning Life

Engineering Parents Say The Darndest Things

“I wouldn’t suggest engineering as a career path for my child.”

So you’re an engineer. Maybe you have been for a long time and you have put up with a lot of grief. But still…Would you really tell your kid not to go into engineering?? Apparently 1 out of every 3 electrical/electronic engineering parents or so are. And while these numbers are better than the ridiculous ones I had first thought they were (more like 2 out of 3), they are better than the numbers coming from non-engineering parents (only 20% encourage their children to go into engineering, though it is likely ignorance). I can’t stand it. Why? Because it’s followed by stories about the US not having enough engineering talent. Then that story is followed by a story about H1B visas. Then THAT story is followed by a commentary about someone lamenting the situation with international workers. But it’s worst when I see it on message boards and comment sections and on blogs (see all the comments on the survey page and just about any other article on EDN or EETimes these days). Then I realize it’s not a statistic. It’s actually people telling their kids why they shouldn’t go into engineering.

sad-graph

So, let’s be scientific about it (engineerentific?) and look at both sides. Obviously, I’m biased about why parents shouldn’t be doing this sort of thing. But I think there are some significant implications if engineers aren’t cultivated from a young age by those who know the profession best.

First, let’s look at your arguments against your child going into engineering:

  1. “Business is all about finance and marketing these days!”
    • Oh yeah, it’s true. Marketing is everywhere and it’s important. I take personal interest in it and bug my friends about personal branding all the time and why I think it’s important and all that stuff. But without a product, there isn’t anything to sell. Nada. Without a product to sell, the bean counters and the brokers on wall street no longer have a job. Without them, everyone loses confidence in the company (for some reason) and everyone is laid off and jobs are shipped overseas or everyone shuts down. End of story. A sub-argument here would be that we need people to package and brand products that are made overseas and that the marketers can continue to do that. Well, that’s true…but eventually the overseas producers are going to figure out that they can come up with and market the products too. Then it won’t just be engineers asking,”Where’d all the jobs go?”
  2. “Engineers aren’t paid well enough!”
    • I can only imagine this would be a complaint among engineers that move up in the workplace and see other educated people continue to move up in salary for non-engineering positions. Sure, if you look at the top of the management field and the top of the engineering field, there are differences at the top. But fewer professions provide the pay that engineering offers directly out of school (with only a 4 year degree). After that, yes, you have to work harder to get to the top of the pay-scale. If  it worries you that much, go get an MBA and try out middle management.
  3. “There’s too much global competition!”
  4. “They will never be in charge!”
    • I would guess disgruntled engineering parents use this reasoning because of timing (an engineer who is 50 might have a child entering college, but if they are still an engineer they may not be “in charge”) and because engineers get frustrated being told what to do; it’s a conflict of roles when a person gets to define how a system is built but not how much money they can spend on a widget going into the machine. However, in order to maintain a technical career sometimes you have to let others do some of the managerial tasks; it’s a sacrifice that is at least in some ways necessary if you want to maintain control over technical aspects of a project. To the ones who fall under this category and wish to do it all, I would encourage you to start your own company; then encourage your children to do the same. One profession that will always have job openings is entrepreneur-ing and there are no greater sources of jobs than small businesses.
  5. “I’d rather my child be a _________.”
    • I know I’m kind of shouting into the void here, but do you hear yourself? No? OK, close your eyes and imagine YOUR parents telling you this. How do you feel? If there is anything an engineering parent should do, it is warning a child against potential pitfalls in an engineering education and career (“Those double integrals can be real stinkers!”), not steering them off on an alternate course. Tell them the truth about engineering, the ups and the downs. And if there are a lot of downs, maybe take a step back and consider why you are still in engineering.
  6. “My son isn’t interested in science!”
    • Well what about your daughter? Besides the fact that there is education assistance for women in engineering and support throughout the educational process, research has shown that more and more women are following in their father’s footsteps (we’re assuming here that the father is the one talking about their son’s disinterest). My friend Elaine can go toe to toe with any other engineer out there and I can personally attest to the fact that she helped me get through college. Women do great things in engineering and cutting off your daughter from that greatness could rob her and the rest of the population of her future potential.

OK, I’ve changed your mind, right? You decided you want to encourage a young potential engineer. What do you say? What are some reasons you should be encouraging your child to follow in your footsteps?

  1. “You get to make stuff!”
  2. “You get to make stuff!”
    • How fun is that? You get to design stuff that will be used by other people! You get to make something that could last longer than you will on the planet! (hopefully as a useful product, not in a landfill). You get to wake up everyday and say “I can do anything. I can make anything. If I can imagine it (and the cost is feasible), I can build it.” Hey, if you aren’t excited about the prospects of working on new products, it’s cool…we can always ship your job somewhere where they’re excited to do that kind of work (and do it at a discount). But if the prospect of making a product excites you (it should, or else you might be reading the wrong blog…), then you should pitch this idea to children who could end up as similarly excited engineers.
  3. “Don’t worry, you can be happy without money.”
    • Wha? Money doesn’t make people happy? Well, no, it doesn’t, and there are lots of studies to prove it. Sure, it makes things a little easier than NOT having money, but beyond meeting your basic needs, more money does not equate to more happiness. You don’t have to belabor this point, because it won’t sink in with kids. Instead, emphasize things that do matter: helping people, living simply, taking joy in your work, trying to change the world, connecting with friends, etc. All these are valuable life lessons and things that will help them in life and in their career (it won’t hurt them to develop those engineering soft skills either!). They will hopefully figure out the money thing later on when they are enjoying the finer aspects of life.
  4. “You won’t be doing the same thing every day!”
    • This is what sold me on engineering. When I was sitting around in high school, trying to plan out a future and really not having any clue what I was doing, I decided I didn’t like being bored. So that was criteria number one. I wanted something where I could do a lot of different things and not sit behind a desk without any hands-on activities. Some job or calling where I would have to keep learning and keep figuring stuff out every day. I know there are a lot of jobs that really do fall under this category, but I obviously didn’t realize it at the time. What I’m trying to say here is that you are more likely to be expected to be an expert on lots of areas as an engineer (technology, science, business, etc) and that will keep you on your toes. And I like that.
  5. “My child, look at the big picture.”
    • If you can go to work every day and feel that you are accomplishing something that is good for you and your community (local or global), then that should be what you encourage your children to do. As an engineer, I would hope that you feel engineering provides the greatest chance to feel satisfied with how you are contributing and that it makes it worth putting up with all the things people complain about in engineering. Engineering can lead to great technical careers, great management careers or careers having nothing to do with engineering. The skills learned are invaluable in myriad professions, so there’s no downside to getting an engineering degree (OK, maybe cost).

OK, so there it is. Two sides of the argument, all presented to you with the skills I learned in engineering school: unarguable logic (10(b) + 10(b) = 100(b)), beautiful prose (technical writing was taught but haikus were my forte) and massaging of data (the hyper link is the new pie-chart). See? TONS of useful skills!

Ah, and now for a bit of perspective. I have been an engineer for 5 years now (counting co-ops). That’s not much, it’s true. However, I am a continual optimist and I believe that I will continue to enjoy being an engineer (hell, I write about it in my spare time). I also believe that engineering will continue to offer the best option for graduates in terms of career fulfillment, compensation, job opportunity (regardless of off-shoring) and options outside of the field of engineering. Everything else I feel about this topic you can deduce from the points above, doubly so for the points dripping with sarcasm.  It should also be noted that I don’t dislike other professions (nor management, which I could very well end up in some day), it’s just that when I compare it to engineering I feel I made the right decision for myself at this time. So there that is. I am young and have not experienced all of the ups and downs of engineering that a veteran might encounter, but I am strongly against discouraging kids from it.

Here’s what I do know. Tell your kids to make up their own minds. Point them in the right direction and let them make mistakes; don’t try to protect them from a potentially great career based upon current (linear) data. I was very lucky in this regard, I have wonderful parents who were very supportive of my choices (although neither was an engineer). As mentioned above, if you are an engineer, point out the good and the bad. Steer them away from the pitfalls in both education and the working world and help to make them a better engineer. Volunteer at schools to let children other than your own know the benefits of engineering and explain to people what you do in a positive light so others know that they can positively affect the world through work in engineering.

If you have any thoughts on engineering or encouraging children in engineering, please contact me or leave them in the comments below!

Categories
Blogging Economics Engineering

Squeaky Wheels Get The Job Hunting Tips

Last month, I had a not-so-nice commenter remark that my last post on blogging keeping me going through a recession was a waste of time. He or she went on to remark that they didn’t have a job and they were obviously looking for some help. While I can’t say I condone their harsh tone and unnecessary crudeness (I know, I know, it’s the internet), I do empathize with their jobless situation.

So today’s post is going to be on some ways (and notably some non-traditional ways) to go about getting a job and hopefully getting through this recession. Here is the big disclaimer though: I don’t know how many of these techniques work. I am basing them on my own ideas and experience and some are just brainstorms. Let’s start from the top with the most traditional methods of finding a job and work our way down to the silly and intriguing ideas. On with the show…

  1. Online job searches/classified ads — 4% success rate, 10% unemployment. Do the math and consider this one to be a non-option.
  2. Networking — Ahh man, I know I’m not going to get this point across like I want to, but there are so many ways this is important. I actually had a digital designer I worked with a few years back sit me down and explain the importance of networking, and I STILL didn’t get it. In fact, for a long time, I was infuriated by the idea that just who you know might get you a job, as opposed to what you know. But here’s what it comes down to: there are a ton of people who can do your job. In fact, there are a lot of people out there who can do your job better and possibly cheaper than you (think China). However, you are the person who was in the right place at the right time, with the right skills, the right charisma and the right contacts. Everything else you start learning the day you start your new position. Networking takes time, though, and you need to start it before you lose or leave a job. It means that you are friendly with the people you work with and you’re actively keeping in touch with people you used to work with.  If you haven’t been doing that, call up a former co-worker and see what they’re working on; you might find something interesting and you get to maintain a relationship easily.
  3. Vendors — Yes, this still falls under the category of networking, but in a different way. Vendors, for those of you who do not know, are people trying to sell you (an engineer or scientist) stuff. They can be salesmen, application engineers, marketers, you name it. If they’re trying to get you to buy what their company has to offer…they’re vendors. They are also in the unique position of trying to sell stuff to other people in your industry; therefore, they know a lot of people doing a lot of stuff that is similar to your job. If I lost my job tomorrow, my stack of vendor business cards would be the first thing I would reach for. Call up some of them and see what trends they see in the industry. Ask for a place to look for your next gig. If you don’t deal with vendors on a regular basis, try other people you interact with daily who have contact to the outside world (maybe the UPS or FedEX delivery person?).
  4. Get something published — You don’t need to publish a paper in IEEE or Nature to get noticed by people. Sure, those first two magazines will get you noticed by a lot of people, but you really only need one. Think smaller. Write a letter to an editor in EETimes or EDN (two of my favorites).  I know whenever I see a letter to the editor, I am usually curious to what kind of expertise that person has and what industry they work in. Make sure when people look you up they know how to find you and that you have some good examples of your work.
  5. Blog Comments — The traditional gatekeepers to knowledge have started to transition. Whereas engineers and scientists might have only had a few sources of news in the past, blogs now offer an alternative in myriad forms; be it a day-in-the-life format or an aggregation of smaller news stories that might interest an engineer or scientist, information is available everywhere these days. These outlets also provide new ways to find others interested in the same stuff as you. If you see a comment from someone on a blog that intrigues you, try to strike up a conversation with them or see if that person has their own website (usually a link from their name). Try contacting the writer of the blog and see how receptive they are to talking to their readers (hopefully very). Blogs provide information and a new method of meeting people online. As with many of the other items on this list, try the less traveled places first; don’t try writing to an administrator of slashdot if you are interested in tech stories. Look for some smaller blogs (maybe from people linking their own blogs on slashdot) and try to contact them.
  6. LinkedIn — One of the best ideas I have ever heard in a job hunt is “informational interviews” (I first read it in the classic “What Color Is Your Parachute”). Basically, you call up someone and ask them about what they do, their industry, job trends and anything else you think might be relevant to a position.  Sometimes people will pick up on the fact that you’re in the market for a job, but other times they might not and you just have an interesting conversation. The problem I always had though was how to get an interview. The best way would be through those contacts I mention when I talk about networking…but the real problem is when you don’t have any contacts either. Then you are in a bit of a tighter spot and you need to get creative. One technique suggested by a friend that had worked for me to look up people on my LinkedIn network; extra points if they work somewhere I think I would like to work. Then once I know their name I try to figure out what their company email might be (usually they’re standardized at companies) and try to email them to request if you can call them for an informational interview. Sure it’s a little sneaky, but I think it’s OK if you’re genuinely interested and not just trying to use them as a contact. Sometimes you won’t get a response, sometimes you’ll get a confused response, sometimes you get a grouchy person and sometimes you get a person who doesn’t mind taking a few minutes out of their day to talk to an inquisitive person. I’ll let you look up informational interview questions for yourself, but go through the interview, keep it brief and ask if they wouldn’t mind passing you a name of someone else to talk to; if they do, be sure to thank them profusely afterward. If they don’t pass you a name… thank them profusely anyway. If nothing else, you will get a good conversation and some more information about an industry that interests you. Note: I always tried to email people first before an informational interview. You could always try and call someone out of the blue (call a front desk, ask for them) and ask for an informational interview; they usually will be confused by this abrupt request. Refer to this technique (that I learned from some sneaky recruiters) only if you really would like to talk to someone and they are non-responsive to email (remember, there might be a reason).
  7. Work For Yourself — My friend Pat recently came up with a great idea while he looks for work. He has been helping me out with my (still) broken Wurlitzer, taking the old schematic and putting it into a modern CAD program. He gets the experience of using common, open-source tools and I get some free labor to help me with my board. He also mentioned learning other software while he is looking for work. I see this sprouting into other opportunities too; if you are working on a new piece of software, you’re likely going to go to discussion boards for help.  You might even get involved in the development of the open-source tools, all of which can provide great experience and great contacts. If nothing else, you can put hobbies on your resume that are relevant to your potential job (the only hobbies that should ever be listed in my opinion). Showing an employer that you are passionate about your chosen field (i.e. willing to go home and do the same stuff you just did for 8-12 hours that day) really can make you stand out in a crowd.
  8. Work For Free — Starting to get into ideas that I’m really not sure would work. Offer to work somewhere for free. This could be considered an “internship” or whatever you want to call it. You’d basically be working for two things (besides no money): contacts and experience. The latter might be limited, especially if you are working somewhere with a sensitive security policy. However, if you offer your services for free, you will get to meet people and that could be worth more than anything else. Remember, you want to look in the non-standard places for work, so don’t waste your time begging for a job at this place. If they don’t want to pay you to start with, they probably won’t want to pay you in the future (at least not in a recession). Instead, talk to everyone you meet and make them want to help you. This idea might be the most difficult of the bunch but if you can pull it off (namely getting the internship to start with), it might have the best chance of success.
  9. Guerrilla marketing — Are you particularly good at CAD programs? Have you created a novel circuit that you think might interest an employer? Have you made a website about analog electronics? Use non-standard ways to stand out; however, make sure you do this at non-standard times. Don’t walk up to a recruiter at a job fair and hand him a circuit diagram with your signature on it. Instead, find out who is in charge of the hiring process (non-HR) and send it to them. Better yet, use the idea in number 5 and figure out who that person is and send the circuit diagram as a thank you to each person you talk to along the way. As for the CAD designer, make your business card out of a circuit board or something else novel like that. Passively advertise that you are in the job market. The “Parachute” book mentions putting it on your answering machine that you are currently looking to have your contacts help your searching project. If you have a website or a facebook profile, make sure it is well known (your front page or your default status message)that you are in the market for a job and some of the best characteristics you can offer. Shameless? Nope, just a good way to get your name out there.
  10. Walk in a front door — This idea was the inspiration for this post and also the most ludicrous of the bunch. What would happen if you dressed up in your best suit and walked into an office and asked for a meeting with Mr. BigGuyInCharge? Sure, you’d need to figure out that person with some sneaky or not-so-sneaky methods prior to walking in there; but if you did it right, this technique has a small small chance of working. It’s like the in person cold call. Most managers won’t have anything to do with it, but that one time it might work that makes it all worth it. I’d suggest any of the above methods before this one, but since it was the inspriation for this post, I figured I had to include it.

The recurring theme for all of these ideas is stepping outside your comfort zone and to try approaches to non-standard job paths. You don’t have to try the most extreme of these ideas (like walking into an office asking to talk to a manager), but you might have to pick up a phone and call a bunch of people. Or you might need to develop some new skills on your own before applying for a new job. If you keep trying hard and keep trying different things (other than online applications), you’ll eventually find something. If you are lucky enough to be working right now, keep an eye out for friends and colleagues and help them when you can. Good luck to all and leave any other ideas you might have in the comments.

Photo by brettdarnell

Categories
Engineering Renewable Energy Supply Chain

What The World Needs, Part 1

I like the communication between myself and my readers and my readers (either random or regular) on the comments section. As such, I’ve decided to try some posts titled “What the world needs” (similar to the “My Hobby” posts over at xkcd). These will supplement, not supplant, my regular posts. So here we go:

What the world needs, part 1…

What the world needs is more energy storage solutions. What we have right now just isn’t going to work. Batteries aren’t reliable enough over the long term, ultracapacitors aren’t developed enough and large scale solutions just aren’t efficient enough. All we keep hearing about at the Detroit auto show are the hybrid and plug-in vehicles (Nov 2010 for the Volt? It’s going to take that long??). While they have the conversion from braking energy back into stored energy, I feel like all of the stored energy solutions right now (within the cars, just are not sufficient). Furthermore, when all those plug-in vehicles are in the driveways of the suburbs and sucking down grid power, there will be a higher need to draw upon reserves of energy, either by cranking on more power plant capacity or tapping stored energy. If we want renewable energy to fill that gap in available power we will need even more storage capability, as renewable sources are not “always on”.

My favorite idea out there is the storage of energy by pumping water up a hill (known as Pumped Storage Hydroelectricity); it’s so simple and beautiful, basically you pump water up a hill and then release it later to be converted through turbines into electricity. The initial concept was developed to help deal with load variations on power lines but also to help sell lower cost electricity produced at night during the high cost hours of the day (a concept the plug-in vehicles also hope to capitalize on). Today we see these hydroelectric storage facilities being targeted as ways to store energy from sources such as solar cells or wind turbines.When the sun isn’t shining and the wind isn’t blowing, renewable sources cannot output power; people do not typically stop consuming energy during those times though, quite the opposite. When the sun is highest A/C units are cranked and when the wind is blowing outside people are cuddled under blankets watching TV or reading by lamp.

Like any engineering problem there are limitations. Evaporation reduces the efficiency in arid climates where large photo voltaic installations are likely. Wind occurs more naturally and is more likely to be harvested in areas with out large inclines to pump the water up and down. The turbines are not 100% efficient so there are losses during any pumping of the water. So the question remains, how else can we store and then harvest energy to take advantage of renewable energy infrastructure?

  1. As the verbiage above suggests, we can actually store energy and harvest it through biofuels; it’s really just a different way of thinking about an existing solution. Corn is a favorite right now, with switchgrass being a potential in the future. Mother nature helps us take sunshine, nutrients from the soil and water to produce plants that can be converted into energy through distillation.
  2. Gravity (in non water forms) could help us store more energy. I think of having lifts that could raise large weights into the air to be released at later times. I know there’s a lamp that uses gravity to temporarily light up LEDs, but I wonder how scalable this idea is.
  3. Spring energy has always fascinated me, ever since I got one of those wind up planes as a kid (you turn the propeller to twist a rubber band which then releases to unwind the propeller as the plane flies). I imagine a huge spring being pushed by some weight and then slowly released later to power a generator, but I doubt the materials would allow this indefinitely (springs eventually lose their “springiness”).
  4. Heat is another storage mechanism but has some serious limitations. You could try and heat up a medium (salt? water? saltwater? I think I saw that somewhere), but then maintaining the heat and retrieving it later provide some serious issues.
  5. Hydrogen is touted as a great storage mechanism; while I like the fact that water is readily available, I don’t think the storage capabilities are reasonable. One of the things I like most about the pumped storage facilities is its simplicity.
  6. Pumping air into a bladder or bag underwater could be a possibility someday. You would pump air into the bag and once the pumping had stopped and you wanted to retrieve the energy, the pressure surrounding the bag would force the air back upwards; when you need it, you direct the air through a turbine to retrieve the energy. Temperature changes as you go down in depth would be a concern (air compresses as it gets colder).
  7. Batteries are still an option…basically taking electrons and squirreling them away into electrolytic solutions (or however you want to do it). These become severely limited in large scale operations though; imagine how many “AA” rechargeable batteries you would need to store the output of a 500 MW wind farm…

As a final note, I should point out I found this other Wikipedia article on grid energy storage at the end of writing this post. I still wanted to publish my ideas but only some of them matched.

I get a little frustrated when I try and think of new ways to store energy; however, it’s reassuring that there are many options out there that can still be improved upon. Can you think of any other natural or otherwise methods of storing energy? Let me know in the comments!

Photo by obenson

Categories
Engineering Learning Life Work

Yes, I’m still here

It’s 2009.

More importantly I’m still employed. I actually had a blog post planned out for early January in the event that I lost my job. Hey, if you’re not going to promote yourself, who will?

I was reviewing my new years resolutions from last year and I realized the only one I really followed through on was finding new employment. And since finding my new employment and starting a blog and all of those details, I have come to some important realizations, mostly about work:

  1. If you’re doing it right, there are 3 sections to your life: sleep, work, other.
    • Sleep is unavoidable. At least for now. If there are ever advances in sleep technology that allow people to sleep less per night (besides coffee), I will be the first in line. Plus, I have come to the realization that without the sleep component in your life, you enjoy the other 2/3 much less.
    • Other is everything you’re not doing when sleeping or working. The most important thing you should be doing (in my opinion) is building relationships in your life and enjoying those relationships. Sure, there are hobbies and time for relaxing and whatnot, but really it’s the connections in your life that will enrich your “other” time. And in this economy, you shouldn’t be planning for too much “other” time, so savor what you get. Heck, I consider this blog to be under this time category and in the event sleep and work  and my family and friends get in the way, the blog will fall behind.
    • So work takes up that last 1/3 of your life…probably more. What I’m trying to get across is, it’s important, much more so than I was ever told when I was deciding what to do with my life. It’s important to enjoy what you do, who you work with, how fulfilled you are by the things you accomplish and having an employer that respects your non-work time. For me, I continue to tell myself that on mornings when I’m walking the dog in the snow or when I glance at the forecasts for my old hometown. I think about how I enjoy my job now and how I let that trump some other things when deciding whether or not I wanted to change my life around and move up t0 the blustery north. And given the choice, I would do it all again and have advised others to do the same (pick up and move across the country for a job they might like).
  2. A job that pays you to learn is probably one of the best jobs in the world–I’m not talking about being a grad student (although that’s not bad either). I know those jobs and assistantships pay you (sorta) to learn and do research and such, but my experience has been in the private sector; jobs where the real expectation is that I produce an item that can be sold for the company. However, the important thing is that you learn in the process.  My job is particularly well suited to learning, mostly because I am handed problems and then told to start fixing them. Jobs that require thinking on your feet and quickly adapt to your situation will give you the steepest learning curve and you should relish the opportunity to be challenged like that.
  3. If you learn new skills, you’re not a commodity anymore–Let’s face it, we’re all afraid of losing our jobs at one point or another. I’d say a higher percentage have that fear now that we’re in a recession. I was talking recently with a friend that just lost her job and she mentioned a similar thought: to stay employed, you have to be valuable to your employer. A simple but powerful concept. In the end if you’re not learning and are not contributing (or not showing off what you do contribute), you are expendable. So in the event that you are in a job that does not allow for learning (either mentored or self-learning), push your employer to let you start new projects that will allow you to do so. If they say your workload is too high, offer to work overtime on your learning project. I think it’s that important and it might just help you save your job.

The recession will deepen. But even in the Great Depression, with 25% unemployment, that meant three out of four people were working. I plan on being one of those 3 by continually increasing my skillset in my work projects or in my “other” time (reading new books, working on my piano and blogging). What are you doing to make yourself more valuable to your employer or to any future employer?

Picture by _neona_

Categories
Analog Electronics Digital Electronics Engineering Learning

Designing For The Long Term

I was at the gym the other day and glanced over at a fellow gym-goer on their cellphone. I did a triple take as the phone was a flip phone that was maybe 4 inches wide and 5 inches high on each flap of the flip (making a 10 inch phone when completely extended).  On my third glance at this monstrosity of a phone I realized it was in fact a Blackberry that he had pulled out of it’s case/holder but the case looked like the bottom half of a flip phone. It got me thinking about design longevity.

I think back on the cell phones of the past and recent past and remember how clunky and awkward they were. That was maybe 5 years ago and those phones have long been sitting at the back of peoples’ desk drawers or hopefully donated to causes that recycle phones. I am amazed that these phone manufacturers continually get away with phones that will be obsolete in 5 years maximum. Why don’t we expect more from our mobile devices (in terms of longevity)? Do we really think your phone will last more than 3 years?

My most recent phone just passed away after 2 years. In my case I MAYBE dropped my phone in a bowl of soup, but I think it just got one of the external speakers; really I think the kiss of death was something a bad battery (which was not contaminated with soup). But even if it lasted another year and THEN died, would I have been upset? I don’t think I or most people would be because we have come to expect consumer products to have a shorter life span.

How do we design electronics for the long term? There are a bunch of great examples of electronics that have been built to last:

  1. Military designs –Aside from the humongous budgets that most contractors have for their military products, the specs on military designs can be equally large in scope. Translation: The military gets high quality products that were expensive but are built to last. These products are often ahead of the technology curve (thanks to the money available), so the technology often goes obsolete later too. The final piece is that the harsh environments encountered by military personnel requires gadgets that are sturdy enough to last for a long time; the ones that function in the field can continue to do so for a long time. A good example would be this emergency radio which was recently torn down by EETimes after an eBay purchase. The 1950s internals reveal high quality workmanship with components that match.
  2. Space designs — Although NASA’s budget has been cut back since Bush has taken office, this research intensive organization has produced some of the finest inventions for human kind. Not only that, they have a mandate to create equipment that can last for long periods of time. My favorite example is the Voyager 1 satellite, currently exiting our solar system and headed further than any other human instrument has ever been. Not only that, but this advanced spacecraft started taking up close pictures of Jupiter and Saturn before I was even born (first passed Jupiter in 1979). The fact that this machine is still functional, still running tests and still capable of sending back data until 2025 (est.) is mind boggling. Not only that, but the spacecraft has not had the advantage and protection of the earth’s ionosphere, so it has been taking much more direct cosmic radiation than normal electronics.
  3. Power companies — These terrestrial behemoths don’t have to worry about cosmic radiation quite as much as the NASA folks, but they often have materials carrying hundreds of amperes of current over long distances. Unfortunately, these systems are in need of some updating (especially to accommodate new renewable energy resources onto the grid), but once they are built, I’m sure they will hold up. Usually power companies achieve longevity in their equipment by using high quality, high strength materials that are designed with enough overhead to manage higher loads that they expect to see (i.e. A copper wire that is designed to carry 1000A of current, but only carries 600A on a regular basis).
  4. Nuclear Facilities — Some of the remnants of the Cold War include the control systems that decided whether missiles would fire or not. These are still some computers operational today in Russia that (we hope) are still making logical decisions. While I don’t agree with these computers in the first place, I sure hope they continue to hold up, otherwise it will prove to be a doomsday device. Proper shielding from radiation and free radicals help to prevent aging damage to electronics from fissile material, in addition to starting with high quality, military-grade products.
  5. Autos — While the auto industry might be falling on its face currently, the designers in Detroit used to help drive new technologies in many other walks of life. Looking at cars that have lasted since the 50s and beyond, we see examples of simple yet elegant electrical designs that were meant to last. Cars have not always had the GPS systems of today (which I’m guessing will have a much shorter lifespan), but have had electronics powering the wiper blades and the spark plugs for a long time. These systems in vintage cars require some maintenance and the occasional fuse replacement, but on the whole are sturdy enough to continue powering well-cared for vintage vehicles.

So these industrial/military and some commercial applications obviously present the need for longevity in finished products. However, designers need to consider many different parameters of a system in order to produce the best product for the long term.

  1. Communication protocol — This item applies most directly to cell phone makers and is a decent excuse for their short life products (but does not excuse everything about them). Unfortunately for phone users (and fortunately for phone makers), wireless protocols are always changing in order to try and achieve the highest bandwidth, usually through higher frequencies or different transmission methods. So once a technology changes for good, older phones become obsolete (and the phone makers happily sell you a new shiny one). This problem also exists when looking to the internals of products; to prevent obsolescence due to outdated protocols, they should be standard to the industry in which the product will be used, simple enough to incorporate into a new standard (and included legacy support) and well documented. Nothing is worse than having a 20 year old device that works fine but can no longer transmit information. An example might be an industrial test fixture on an old computer that only has a 5.25 inch floppy drive. The test fixture might work great, but getting data off that computer is no longer viable so the entire setup is obsolete. A tried and true method for machines to communicate has always been serially and with good reason. While a newer communication protocol might require myriad signals that are not available on an older product, most improvements to a serial signal are often speed (increasing the frequency of the oscillator driving the serial line) or encoding. Since devices can be re-programmed to send a new encoding or you could slow down the device on the receiving end, serial communications seem to be a viable solution for lots of applications.
  2. Long term drift of components — Designing for 10’s of years often requires attention to detail and deep pockets. The most important first step is to watch for this parameter on a data sheet for any critical component (marked as “long term drift”, often given as a percentage change over a specified period). But beware, many vendors simply leave this data off of their spec because they either do not think it is relevant, do not want to display poor data or because they don’t know what it means. In any of these situations it is critical to demand this data or to perform testing yourself in order to create lasting products.
  3. Susceptibility to thermal stress — Size matters when it comes to handling thermal stress; this is partially why older electronics hold up so well. The smaller components on a device get, the less heat they can dissipate (assuming similar materials in a larger package). A good example would be resistors. A 0603 resistor (.6mm x .3mm) can only dissipate 1/10 of a watt while a standard through-hole component can dissipate 1/4 watt on average. This is a trade-off that must be made in any system designed for portability, but could result in lower product lifetime (especially in high heat or high current situations).
  4. Standard packaging — The chip industry is a highly competitive environment where silicon designs are always being touted as the next best thing. Unfortunately for older products, this can often mean that components such as op-amps or a buck converter will no longer be produced. It’s a symptom of being in a dynamic industry and has to be dealt with. The best way to combat obsolescence is to create projects that have standards designed in to them. Thinking about creating a great new analog circuit with a non-standard pin-out in a device package that is so obscure that you have trouble finding it in catalogs?  Why not try making some other compromises on your circuit board and squeezing in a proven SOIC-8 with a pin-out similar to 4 other op-amps. You’ll be happy you do in about 4 years when that op-amp you’re using goes obsolete.

There are probably other ways to help design a product with a long life span, but these are a good start. A common theme is to pay more for higher quality components, which might not be preferred in certain situations. However, designing products for the long term can help save money year after year by not having to replace products or maintain sold products so spending a little more up front could pay off in the end. Some newer consumer electronics industries create new products each year either to drive demand or to fulfill needs after older devices break (which they may have produced).  In the process, they try to drive cost down by using the cheapest parts available; this can cause failures and unhappy customers. To design a long term product, costs and long term design considerations must be balanced.

What’s the longest period you’ve ever had a piece of functioning electronics? What kinds of changes did you see over the years? Have you ever created a low cost design that lasted more than 5 years? Let me know in the comments.

Categories
Analog Electronics Digital Electronics Engineering

Circuit Board Design (And How It Has Changed)

Products today mostly use Printed Circuit Boards (or PCBs) to successfully route signals from one component in a circuit to the next. There are multiple layer circuit boards with printed metal “wires” that run between the various elements in a circuit. However, this was not always the case. In the good ol’ days, there were different variations and precursors to the PCB. Some of these included point to point wiring (just soldering a wire between say a resistor and a capacitor), wire wrap boards (think of a point-to-point board on a grid with more wires than you’d know what to do with), acid etched copper on dielectric (think of a 1 layer PCB with very large and rounded signal traces) and many others. These kinds of boards had many many different methods but also had less restrictions than modern designs. In fact,  Paul Rako from EDN recently wrote a great article on prototyping using some of these older methods. He references many techniques of the greats like Bob Pease and Jim Williams and their rapid prototyping techniques. It’s an information rich article and I would highly suggest checking it out. OK, back to the party.

So what has changed when moving from older boards and circuit designs to newer circuit boards?

  1. Speed — There’ s no denying that the boards of today are faster than those of yesteryear. The extremes are apparent in the RF industry which is/was doing well because of the cell phone becoming the hottest platform to develop for (PCs are still around of course but the excitement is in the cell phone industry).  When frequencies get into the GHz range and you’re trying to guide signals instead of wire them, you know that your boards will be finicky. Additionally, the speed increase is not limited to the RF industry as many new designs have at least some component of a clocked digital system on them. Even pushing into the MHz range can be difficult with older board techniques. Wiring point to point is not as viable with high speed signals, especially when you have upwards of 32 wires between two components (a data line).
  2. Size/Type of components – This is another symptom of newer industries. As products go increasingly mobile, parts begin to shrink out of necessity or because the cost of making the older, larger parts becomes prohibitive. As such, the boards have made a large change going from through-hole components (like the capacitors in the picture at the top of this site), to Surface Mount Technology. This has affected the construction of final boards (SMT usually requires machine placement for quick and reliable boards). This also means that the amount of power a board containing only SMT parts can absorb (when the board is considered as one entity) is reduced as the smaller SMT parts cannot handle as much current without blowing up.
  3. Number of connections — I’ve included a picture of wire wrap from the Wikimedia commons site below. Notice anything about it? It’s ridiculous! And I would encourage you to go to the Wikipedia page and look into some of the other types of wire wrapped boards. Now let’s look at a common package today, the Ball Grid Array (BGA). This type of package uses little solderballs on the bottom of the package to adhere to the board. It is glued on at first and when you reflow (heat up to make the solder melt), the balls fall into place on whatever PCB you have produced (assuming you have made the PCB correctly).  BGAs start around 144 pins (maybe 196?) I believe and go to upwards of 1000 pins per part. Can you imagine trying to hook up 1000 wires like below? I don’t think so.

  4. RoHS — Lead is bad for the environment, for your health and for any children who decide to ingest it. In fact, the only people who speak the wonders of lead these days are cranky analog engineers such as myself, trying to solder something (I’m a 6 out of 10 on the cranky scale). Why do we love lead? Because Lead-Tin (Pb-Sn) solder is much easier to work with due to the lower melting temperature and higher thermal capacity.  So as RoHS becomes more widespread, with the Silver-Tin (Ag-Sn) solder that is more difficult to work with, it become another element of board design that must change.

So obviously some stuff has changed. Some is for the better, some not so much. Let’s look at board problems encountered in modern day printed circuit boards in order to see the problems encountered as circuit boards have become more inexpensive and repeatably made:

  1. Capacitance in the board — Printed circuit boards are constructed from a non-conducting material so that signals do not leak from one lead to another. However, in constructing the perfect insulator, they also created a material with a significant (but not huge) dielectric constant. This means if two signals are routed over top of one another (acting like plates), then the sandwich of the signal and the dielectric will act like a capacitor. Not only that, but as you increase the frequency of a signal (with speeds upwards of GHz), the capacitor looks more and more like a shorted wire! This phenomenon is known as “cross-talk” and can affect myriad high-speed or high voltage situations.
  2. Inductance in the leads of a chip — Before the BGAs mentioned in point 3 above, there were packages (usually square) with leads coming out the sides known as Quad Flat Packs (QFPs). The leads coming out of them vary in thickness, but usually get thinner as there are more leads on a chip. As the leads get thinner and longer, the inductance of those leads goes up. We remember that inductors are the “opposite” of capacitors in that they allow low frequency signals to pass and block high frequency signals. In a system that is mostly high frequency signals (think digital), the inductance of the leads can have a serious affect on how well a signal propogates from one element on a circuit board to the next. BGAs have started to reduce this problem, but the cost of dealing with BGAs can be quite prohibitive for smaller operations.
  3. Timing — In a high speed system that requires signals to depart a component at a certain time and arrive at a different component a short (predictable) while later, there are many things that can prevent the signal from arriving undisturbed. We’ve already seen the capacitive and the inductive effects mentioned above, but what about resistance?  Although everything has some amount of resistance, the lines in a board routing one component to the next can have an affect on the overall performance of a circuit. If one of these lines is longer than another than there will be a noticeable difference in the resistance of that line. Most importantly, when comparing the impedance (sum of the resistance and the frequency dependance of the impendance and capacitance) of two different lines going between components (say a processor and a RAM chip), differences can cause the signals to arrive at different times in different conditions. The rise times, the fall times, the over shoot, the under shoot, and the general shape of a signal can all be affected by the characterisitcs of the connection. It is useful to remember that every connection really acts like an RLC filter circuit, the only difference being how much resistance, inductance and capacitance are present and how they will affect the final signal.
  4. Ground/Power Plane — Other advantages a circuit board brings, especially multilayer circuit boards, is the ability to route a plane of power or a grounding plane underneath a portion of a design. If we think of a PCB as a large sandwich, the grounding plane would be like a slice of cheese, running underneath many of the different components of a circuit but not necessarily connected to them. If you design a circuit to have “vias” then an example component on the very top of a circuit board can connect down to the plane and access the power, ground or whatever signal happens to be running underneath there. This technique can be quite useful if you have many different op-amps in a certain area that will require positive and negative power supplies. Or if you have a large connector that requires a majority of pins to be grounded, a grounding plane can be useful to quickly connect many signals to the same net. However, as with any system, there are real-world consequences to deal with; in this case, we have to deal with electrons acting like electrons. With grounding planes, all of the pins on a board that are tied to ground will technically be at ground, however if one pin happens to have a large current going into the ground, then that area might have a slightly higher potential (voltage) than other ares of the grounding plane. This could have some definite effects in sensitive electronic situations and should be considered when designing a new PCB.
  5. Heat/Warping — A major downside to PCBs is the rigidity of the material; worse, when it heats up, it can often warp and become unusable. This could also be a problem in acid etched and wire wrap boards (the warping), but since the connections are often either larger traces or wires, the chances that the warping would break the connection are lower. Worse yet, the example above (dumping current into a ground plane) can create its own heat and warp a board without even being in a heated environment. Thermal budgets become important in any new PCB design and you should be mindful of them. Some SPICE programs even allow you to check out what the heat/power dissipation will be before putting the components on a board.
  6. Low Power — Unfortunately for high power circuit manufacturers, PCBs require extra care when they contain high voltages or high currents. Newer boards are often optimized for power savings, so high power situations are not as much of a priority for the tools that create PCBs. There are often constraints in the layout programs to ensure proper safety requirements, but other steps might be necessary, like separating high power lines from one another so they do not spark or create noise on other lower power lines.

Printed circuit boards allow for reliable products that can quickly be deployed to customers or used in a lab situation to test new circuit configurations. As long as you are mindful of the pitfalls of PCBs listed above, you can create circuit designs that can do just about anything imaginable.  If you have any suggestions on how to create better PCBs or circuits in general, please leave your thoughts in the comments.

Categories
Economics Engineering Learning Life Work

On Job Losses and Stem Cell Engineers

Like any good mortgage-fearing first-time home buyer, I worry about my income sources and my job. I don’t have any fears based on performance, but just general fears. It seems that the possibility of recession I wrote about back in September is here and it doesn’t look like it’s going anywhere for a while. So what can I tell you to try and put your mind at ease (“you” of course being an engineer or someone interested in the fate of engineers…I have no authority on other job types). I can tell you what I was told when I was nervous today:

You’re going to be fine. (Helpful, right?)

The great thing about being an engineer, and specifically a relatively inexperienced engineer, is that you’re desirable because you’re flexible (mentally, of course, unless you’re one of those weird gymnast/engineers). You can easily come into a new role that you may know very little about and quickly learn the task. This is not to say that others are not capable of doing the same; many individuals are very good at this concept and are known as “polymaths” (people who excel at many different disciplines, a great example being Leonardo DaVinci). No, I speak of engineers as being mentally malleable because that is the main skill they are taught in school. If an engineer learns nothing more in school, they should learn to teach themselves.  This is why I think of new engineers like stem cells; they naturally adapt to those around them to perform a similar task. However, the longer they stay in a position or field, the harder it gets to leave that field.

So in an effort to calm me down (he did), my friend pointed me to a piece of advice he received from a former colleague, who I also knew. This person was and is a great all around engineer (mechanical by title, but knew his way around electronics) and had the following to say (paraphrased):

As long as you’re willing to work hard, you’ll be OK in the end. At times, you might not like every aspect of your work you’re doing and at other times, you won’t get paid what you deserve. But come good and bad, if you work hard and are open to learn whatever is required to get the job done, you’ll be OK.

My friend told me that this talk he had with the experienced engineer has stuck with him and it’s easy to see why. A veteran engineer who had re-invented himself many times over was living proof that when times get tough, the tough get learning. I guess in the end this is kind of stating the obvious; if you are willing to do anything to get by, you will get by. But I think it is interesting in the context of this blog because when engineers lose a job or are stuck working only contract work, they think there are no other options. Instead, they could be looking at non-traditional roles for engineers, explaining how they can apply their past experiences and hope that the hiring manager recognizes the flexibility most engineers have and puts them to work. I think of a situation where a power engineer cannot find work and ends up in a power line technician position. Not only would the engineer be temporarily employed, they would be able t experience many of the problems that their customers or end-users experience every day. In the best case scenario, the engineer would be able to take that knowledge back and design a better product.

So what do you do if you are an engineer and out of a job currently? Perhaps try a related field that can be used as leverage at your next job. I think of my time working in a semiconductor fabrication facility this way; I was not working on the design of the product, but I got some hard skills (mostly statistics), some soft skills (working in a high pressure environment independently) and some undefinable skills (a sense of where the semiconductor business is heading and how it could affect the market). If you happen to work in a field that is so niche that you cannot find anything remotely similar to what you prefer to work on, maybe try taking a traditionally lower level job in your field and try working on more hands-on type activities (similar to the power line example above). You can work to hone your existing skills and hopefully rise quickly as you show how proficient you can be. However, if there are not any engineering positions available, it is likely there will not be these lower level jobs available either. So in the most dire of straights, try for something completely different. Since starting my blog I have become increasingly interested in marketing and how to create a brand. If there came a time that I could not find engineering work, I would try and target marketing as a near choice–not because I have any relevant experience (I don’t)–but because I think that the skills I would pick up would be helpful at unknown points later in life.

As for non-engineers out there, I can only speak good things about engineering and the job prospects throughout a recession. As I always do with younger people asking about engineering, I can quickly lay out some reasons to become an engineer (and would be willing to do so more if you have more questions by email). You have the flexibility to do a wide variety of tasks and have the opportunity to positively impact the world. You can choose among a wide variety of professional fields or stay in school and teach others engineering skills or do research in a university setting. There are many naysayers who claim that you will not be in charge on projects, but you could always choose management if you want to run the show. Others will say that you will not get paid what you deserve; but I think that remembering engineering is about helping people is important. Not only does it discourage those who are only in engineering for the money, it also helps remind you that your goal should be to help others.

So I know this post spanned many aspects of engineering but I think the main idea is that as an engineer, you can survive a lot of what the economy throws at you. Hard work and mental flexibility will let engineers re-invent themselves if necessary and prosper in the most volatile of economies. If you have experienced job safety or, conversely, have been pushed off an employment cliff thanks to your engineering degree and you’d like to share, please leave your thoughts in the comments.

Categories
Economics Engineering Life Politics Renewable Energy

Welcome President Obama! Now let’s get crackin’ on renewable energy.

I wrote last week about Barack Obama further laying out his plans for renewable energy. He states in that video that he plans to invest $15 Billion or more in renewable energy each year. My question is, what can we start doing now? In order for him and the renewable energy community to hit the ground running on Jan 20th, we need to start planning some actions for the new administrations (with or without funding).

  1. Education — Without a new crop of able young engineers, we won’t get far. So how do you get involved in helping to make this a reality? Follow my volunteer idea and go to middle- and high-schools and share what it’s like to be an engineer with young people. Even better, I recently found out that I was right in thinking I was not original…there are many programs in place to allow engineers to easily reach out to their communities. The one I am currently considering is the New Faces of Engineering Road Show, hosted by the Cleveland Engineering Society. They travel to schools and promote engineering and science to young students, basically the exact thing I wanted to do.
  2. Conserve — The best way that individuals can help on a daily basis is to conserve, in general. Use less utilities (turn off your lights, turn down your heat), recycle your recyclables, carpool to work
  3. Stay involved — This year has shown young people actually can make a difference in elections and in general. This is due to the extreme influence of social media and how it connects people online and throughout the world. Now use that power to go out and influence individuals and corporations that a green economy will benefit all Americans (and the world).
  4. Consider alternative and renewable energies — Black silicon or not, photovoltaic (PV) cells are still expensive. However, there are simpler methods, such as corn stoves, which have lower environmental impact and are definitely renewable year after year.
  5. Keep them honest — No matter how good their stump speeches are nor how honest they may seem, absolute power corrupts absolutely. While the checks and balances were put in place by our forefathers to keep our branches of government watching one another, the true power in oversight will come from civilian oversight. This has been further enabled by the internet in recent years and we must insist that our newly elected government officials do not take advantage of their positions for personal or nepotistic gain.
  6. Join the fight — Sure, there will be more political battles, notably with oil barons not wanting to relinquish their grasp on easy profits; but the real battle is with innovation and design challenges. Use online resources to go out and educate yourself on analog electronics. The biggest challenges will be won by the groups with the most resources. If we want a future filled with solar and wind generated power, go out and learn how to make that a reality by studying the basics.
  7. Start something — Been studying this stuff for so long that you think you have a great idea on improving an existing system (the power grid, anyone?) or developing a disruptive renewable energy technology? Go for it. In order for the green revolution to begin, America (and the rest of the world) needs entrepreneurs to step up to the plate and take risks in order to develop these emerging technologies. Do you prefer the less technical side of engineering? Pair up with the entrepreneurs. Technically minded people are just as important to take the time to introduce the new technology to the rest of the world.

Good luck President Obama. You have a huge challenge ahead of you, a huge wreckage behind you and a huge nation standing and waiting for you to wave the green flag. Let’s all try and toe the line as soon as we can.

Categories
Engineering Life Work

Engineering soft skills and stepping outside your circle of competence

My great great grandfather was a preacher. My grandfather was a great salesman. My father is a great salesman. I am an engineer. One of these things is not the same here. How did I enter a profession often associated with introverts and socially challenged people? Am I doomed to fulfill this stereotype? What kinds of skills must I develop to be a better engineer all around?

I write about these things for two reasons. One, because the skills I’m about to list are necessary in every aspect of life, not just work. And two, because most engineers do not stay engineers for their entire career. Either because of desire for higher pay grade, natural promotion or just wanting to be in charge, most engineers end up in management eventually. I will leave opinions about whether this is the correct path to the comments.

  1. Public speaking — One of the most feared activities the world over, this is a good one to force yourself to practice.  Granted, not many new grads will have much to present about; but once you are tapped for that first presentation, it is likely it is an important reason. It’s probably better to practice your public speaking in front of your design group or an organization outside of work before you’re chosen to speak in front of the company. The best tip I can give is to slow down. You’ll become more aware of what you’re saying and you’ll be less likely to say “um” when your mouth pauses from its usual mile-a-minute pace.
  2. Presentations — I believe Nate (a good friend and frequent commenter) put it best in my post about getting a job out of college, when he said that the engineering education at our school didn’t focus nearly enough time on giving presentations and communicating our ideas to our superiors. When you look at the percentage of time we present compared to how much time we spend designing a solution, it seems much more important than ever was stressed in school. For tips on presentations and powerpoint, I usually look to Seth Godin, marketing guru and writer extraordinaire.
  3. Conventioneering — Not every engineer goes to conferences on a regular basis, but when you do, you have to know how to work it. Remember, it’s not just a food free for all; nor is it time to go around seeing how many thousand pens you can gather. These are opportunities to check out your competition, find new components for designs, see some cool stuff and maybe even make a few friends (or contacts, if you will).
  4. Small talk — You know what you do a lot of at conventions? You stand around a lot. You know what else you do? You make small talk with strangers. But the skill here is learning how to open people up to talking about more than the OSU football team or the weather. Instead you want to find some meaningful information about them and then relate back to them with stories of your own that fit. Getting people to relate to you will help you build your business contacts, drum up leads for your marketing people and again, help you make friends. You never know who you meet that might be working on the next Google or Apple. You just never know.
  5. Networking — Things don’t last forever. In fact, it’s a skill to know when to quit rather than wait for a job to dead end. Unfortunately, people always extol the virtues of networking but never tell you how to do it. Some say blogging is a good idea for networking, but I haven’t hit the jackpot on that one yet. I’d say the best way I’ve found so far is to bite the bullet and call up some people you don’t know (who happen to know a lot) and ask them for some time to talk about what they do. Sure, this works better when you’re not looking for a job, but it works OK when you’re desperate too. Remember, there are a LOT of people out there and the ones getting calls are mostly the ones everyone knows about (Steve Jobs, Bill Gates, etc). If you happen to catch a name of a local engineer who does something you do, call him or her up and ask to hear about their job for a while. If you don’t think you’ll be overhearing any names anytime soon, go to LinkedIn and snipe some names off of there. The main thing is to be courteous, be honest with them (if they ask if you are doing this to find a job, tell them yes or no) and most of all, be interested. Playing to someone’s ego may sound bad, but it works because people want to feel important and wanted. Don’t forget the thank you notes either. (For more info on networking, I always like “What color is your parachute” by Richard Nelson Bolles. It is updated yearly and has some great information).

Soft skills aren’t limited to the ones above, but they can get you pretty far in life past the lab bench. Remember, these skills aren’t absolutely necessary–they just help engineers round out their skillsets. If you are an engineer who wants to start a company one day, you’re going to have to sell your idea, at least once. So you might want to think about working on developing the skills listed above; at the very least, recognize what they are and partner up with someone who displays these attributes.

Is there a soft skill missing? Am I way off on any of these? Let me know in the comments!

Categories
Analog Electronics Digital Electronics Engineering Learning Life Work

How to get a job as a new electrical engineer grad

I was going to call this post “A portrait of an electrical engineer as a young man (or woman)” but decided against it. I’ve got nothing on James Joyce, neither in loquaciousness nor confusing writing.

Anyway, I have been pondering what kind of employee I would hire out of school for an electrical engineering position. There are some basic skill sets that will allow just about any young engineer to succeed if they have these skills (the best situation) or at least appear they will succeed if written on their resume (not the best situation). Either way, let’s look over what a new grad should have on their utility belt before going out into the scary real world.

  1. Conceptual models of passive components — This has been one of the most helpful things I have learned since I have left school…because this kind of thinking is not taught in classrooms (at least it isn’t in the curriculum). The idea is to conceptualize what a component will do, as opposed to what the math is behind a certain component or why the physics of material in a component give it certain properties. Why does this matter? When you’re looking at a 20 page schematic of something you’ve never seen before, you don’t care what kind of dielectric is in a capacitor and how the electric field affects the impedance. Nope, you care about two things: What is the value and how does it affect the system. The first question is easy because it should be written right next to the symbolic notation. The second is different for each type of passive component you might encounter. Let’s look at the common ones
    • Resistors — The  best way I’ve found to think of resistors is like a pipe. The electrons are like water. The resistance is the opposite of how wide the pipe is (if the resistance is higher, the pipe is smaller, letting fewer electrons through in the form of current). Also, the pressure (voltage) it takes to get water (electrons, current) through a pipe (resistor) will depend on the thickness of the pipe (resistance). Well whaddaya know? V=IR!
    • Capacitors — At DC, a capacitor is essentially an open circuit (think a broken wire). If you apply charge long enough (depending on the capacitance), it can consume some of that charge; after it is charged it will once again act like an open circuit. When considering AC (varying) signals, the best way to think about a capacitor is like a variable resistor. The thing controlling how much the capacitor will resist the circuit is the frequency of the signal trying to get through the capacitor. As the frequency of the signal goes up, the resistance (here it is called “impedance”) will go down. So in the extreme case, if the frequency is super high, the capacitor will appear as though it is not there to the signal (and it will “pass right through”). Taking the opposite approach helps explain the DC case. If the signal is varying so slowly that it appears to be constant (DC), then the impedance of the capacitor will be very high (so high it appears to be a broken wire to the signal).
    • Inductors — Inductors have an opposite effect as capacitors and provide some very interesting effects when you combine them in a circuit with capacitors. In their most basic form, inductors are wires that can be formed into myriad shape but are most often seen as spirals. Inductors are “happy” when low frequency signals go through them; this means that the impedance is low at low frequencies (DC) and is high at high frequencies (AC). This makes sense to me because if the signal is going slow enough, it’s really just passing through a wire, albeit a twisty one. An interesting thing about electrons going through a wire is that when they do, they also product tiny magnetic fields around the wire (as explained by Maxwell’s Equations). When a high frequency signal tries to go through the inductor, the magnetic fields are changing very rapidly, something they intrinsically do not want. Instead it “slows” the electrons, or really increases the impedance. This “stops” higher frequency signals from passing through depending on the inductance of the inductor and the frequency of the signal applied. Looking at the how they react to different frequencies, we can see how inductors and capacitors have opposite effects at the extremes.
    • Diodes — I think of diodes as a one way mirror…except you can’t see through the one way until you get enough energy. The one way nature is useful in blocking unwanted signals, routing signals away from sensitive nodes and even limiting what part of a varying signal will “get through” the diode to the other side.
    • Transistors — I always like thinking of transistors as a variable resistor that is controlled by the gate voltage. The variable resistor doesn’t kick in until the gate voltage hits a certain threshold and sometimes the variable resistor also allows some energy to leak to one of the other terminals.
  2. C coding — Sorry to all you analog purists out there, but at some point as an engineer, you need to know how to code. Furthermore, if you’re going to learn how to code, my personal preference for languages to start with is C. Not too many other languages have been around for as long nor are they as closely tied to hardware (C is good for writing low level drivers that interpret what circuits are saying so they can talk to computers). I’m not saying higher level languages don’t have their place, but I think that C is a much better place to start because many other languages (C++, JAVA, Verilog, etc) have similar structure and can quickly be learned if you know C. Even though the learning curve is higher for C, I think it is worth it in the end and would love to see some college programs migrate back towards these kinds of languages, especially as embedded systems seem to be everywhere these days.
  3. How an op amp works — I set the op amp apart from the passives because it is an active component (duh) and because I think that it’s so much more versatile that it’s important to set it apart conceptually. I’ve always had the most luck anthropomorphizing op amps and figuring out what state they “want” to be in. Combining how you conceptually think about op amps and passives together can help to conceptualize more difficult components, such as active filters and analog to digital converters.
  4. The ability to translate an example — A skill that nearly every engineering class is teaching, with good reason. Ask yourself: are homework problems ever THAT much different from the examples in the book? No. Because they want you to recognize a technique or a idiosyncrasy in a problem, look at the accepted solution and then apply it to your current situation. Amazingly, this is one of the most useful skills learned in the classroom. Everyday engineering involves using example solutions from vendors, research done in white papers/publications and using even your old textbooks to find the most effective, and more importantly, the quickest solution to a problem.
  5. High level system design — This is similar to the first point, but the important skill here is viewing the entire picture. If you are concentrating on the gain of a single amplification stage, you may not notice that it is being used to scale a signal before it goes into an analog-to-digital converter. If you see a component or a node is grounded periodically, but ignore it, you may find out that it changes the entire nature of a circuit. The ability to separate the minutiae from the overarching purpose of a circuit is necessary to quickly diagnose circuits for repair or replication in design.
  6. Basic laws — It is amazing to me how much depth is needed in electrical engineering as opposed to breadth. You don’t need to know all of the equations in the back of your textbook. You need to know 5-10; but you need to know them so well that you could recite them and derive other things from them in your sleep. A good example would be Kirchoff’s laws. Sure, they are two (relatively) simple laws about the currents in a node and the voltage around a loop, but done millions of times and you have a fun little program called SPICE.
  7. Budgeting — There are many important budgets to consider when designing a new project. In a simple op amp circuit, there are many sources of error and inefficiencies. Determining and optimizing an error budget will ensure the most accurate output possible. Finding and determining areas that burn power unnecessarily must be discovered and then power saving techniques must be implemented. The cost is another consideration that is usually left to non-engineering, but is an important consideration in many different projects. Finding cost effective solutions to a problem (including the cost of an engineer’s time) is a skill that will make you friends in management and will help you find practical solutions to many problems.
  8. Math — Ah yes, an oldy but goody. Similar to the passive components, having a conceptual notion of what math is required and how it can be applied to real life situation is more important than the details. Often knowing that an integral function is needed is as important as knowing how to do it. And similar to the basic laws, you don’t need to know the most exotic types of math out there. I have encountered very few situations where I need to take the third derivative of a complicated natural log function; however, I have needed to convert units every single day I have been an engineer. I have needed simple arithmetic, but I’ve needed to do it quickly and correctly. Sure, you get to use a calculator in the real world, but you better learn how to use that quickly too, because your customers don’t want to wait for you to get out your calculator, let alone learn how it works.

Each of these skills could be useful in some capacity for a new electrical engineer grad. There are many different flavors of engineering and the skills listed above are really modeled off what would be good for an analog system engineer (who develop commercial or industrial products). However, a future chip designer and even a digital hardware engineer all could benefit from having the skills listed, as it is sometimes more important to be open to new opportunities (especially given the possibility of recession and potential shifting of job markets).

Did I miss anything? Do you think there are other skills that are necessary for young electrical engineers? What about general skills that could apply to all young engineers?

[xyz_lbx_default_code]