I don't get this rule about Op-Amps:
Can anybody explain it to me?
But how can an Op-Amp amplify anything if the inputs are at the same potential? Isn't it all about amplifying the difference? I've read this 20 times on different web sites and no one seems to notice what confusion this can create within the mind of a nub.Whenever an op amp senses a voltage difference between its inverting and noninverting inputs, it responds by feeding back as much current / voltage through the feedback networks as is necessary to keep this difference qual to zero. (V+ - V_ = 0). This rule only applies for negative feedback.
Can anybody explain it to me?
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