Re: How does an Op-Amp work? (seriously...)

On Sat, 10 Nov 2007 15:37:22 -0600, Tim Williams wrote:

Than opamp does not have an infinite
differential gain,
but only a high differential gain.

Actually, even an infinite gain wouldn't do it. Remember your calculus?
The voltage between the input pins would then be lim G-->infinity (Vout /
G).

And lim[x->infinity](1/x) is equal to zero. Not approximately equal or
almost equal, but exactly equal.


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