Post here to teach people how to do something.
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How the 741 op amp works
http://www.righto.com/2015/10/inside-ub ... cuits.html
Op amps are used as amplifiers, filters, integrators, differentiators, and many other circuits. Op amps are all around you: your computer's power supply uses op amps for regulation. Your cell phone uses op amps for filtering and amplifying audio signals, camera signals, and the broadcast cell signal.
This is a good write up with explanations.
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That is extremely cool!
It's not just showing the circuit diagram but actually labelling each component of that diagram on the silicon itself!
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