Summing Amplifier Explained (Amplifiers #10)

Full derivation and analysis of the op-amp summing amplifier with input bias correction.
Aaron Danner is a professor in the Department of Electrical and Computer Engineering at the National University of Singapore.
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Video filmed and edited by Cheryl Lim.
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I've learned so much from watching your lectures. One of, if not, the best out there.

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To find the input bias resistor, you are really finding the equipment thevenin resistance as seen by both inputs and setting them to be equal. By thinking about it in terms of thevenin equivalent, you can figure it out for any circuit.