Comments on: How an op amp works -- Part 2 http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/ Analog electronics and everything else between 1 and 0 Tue, 15 May 2012 20:56:38 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: jl http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/comment-page-1/#comment-14291 jl Mon, 08 Aug 2011 13:19:45 +0000 http://chrisgammell.com/?p=148#comment-14291 Hello, Thanks for the article! I have a Q though: In all the imperfections of the op amp, is it possible to amplify a voltage as little as 1mV to between 5 and 10 volts? If yes, what type of op amp can do this (e.g can the 741) do this? What values of R1 and 2 as well as power supply can achieve this? Thanks for your response! Regards! Hello,

Thanks for the article!

I have a Q though:

In all the imperfections of the op amp, is it possible to amplify a voltage as little as 1mV to between 5 and 10 volts? If yes, what type of op amp can do this (e.g can the 741) do this? What values of R1 and 2 as well as power supply can achieve this?

Thanks for your response!

Regards!

]]> By: mark http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/comment-page-1/#comment-14152 mark Mon, 18 Jul 2011 17:47:30 +0000 http://chrisgammell.com/?p=148#comment-14152 maybe it's just me, but your part 2 completely missed it's target. you give a simple explanation about a sine wave, then setup a circuit with the two ratio-based resistors, introduce D and E....and then you never actually work the 1V problem or use the sine wave on the circuit. you derailed the point of that discussion with the op-amps power limitations. what a bummer...I'd still like to see the math worked for the sine wave... maybe it's just me, but your part 2 completely missed it's target.
you give a simple explanation about a sine wave, then setup a circuit
with the two ratio-based resistors, introduce D and E....and then you never
actually work the 1V problem or use the sine wave on the circuit.
you derailed the point of that discussion with the op-amps power limitations.
what a bummer...I'd still like to see the math worked for the
sine wave...

]]> By: David Reese http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/comment-page-1/#comment-13426 David Reese Tue, 01 Feb 2011 18:09:44 +0000 http://chrisgammell.com/?p=148#comment-13426 In your discussion about making the top resistor 14 times less than the resistor connected to the ground, I think you ment 14 times larger. In your discussion about making the top resistor 14 times less than the resistor connected to the ground, I think you ment 14 times larger.

]]> By: prajwal nayak http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/comment-page-1/#comment-3465 prajwal nayak Tue, 07 Dec 2010 18:21:01 +0000 http://chrisgammell.com/?p=148#comment-3465 awsum! thanx...i realy wantd to know ths frm th basic..txt buk just gv sum non sense. sum times they 4gt to provide proper basics.this helpd me a lot to understand .wud b pleased if u wud xplain the working of th op amp as an integrator and differentiator awsum! thanx...i realy wantd to know ths frm th basic..txt buk just gv sum non sense. sum times they 4gt to provide proper basics.this helpd me a lot to understand .wud b pleased if u wud xplain the working of th op amp as an integrator and differentiator

]]> By: Unterbahn » Blog Archive » Anthropomorphizing op-amps http://chrisgammell.com/2008/08/08/how-an-op-amp-works-part-2/comment-page-1/#comment-3012 Unterbahn » Blog Archive » Anthropomorphizing op-amps Sat, 16 Oct 2010 18:43:50 +0000 http://chrisgammell.com/?p=148#comment-3012 [...] Chris Gammell Related Posts:In the Metal Recycling Business, It’s Loud, Dirty and Suddenly LucrativeMorozov: [...] [...] Chris Gammell Related Posts:In the Metal Recycling Business, It’s Loud, Dirty and Suddenly LucrativeMorozov: [...]

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