Homework about opamps, I try it but I can't do it.

Thread Starter


Joined Dec 30, 2020
Hi ,
I have a homework about opamps and I do most of them but I am stuck with CMRR values simulation on proteus how can I do basically.I want to learn it Could you help me sir thank you ? My circuit is in below and I don't understand what is my failing .
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Audioguru again

Joined Oct 21, 2019
The 53 years old opamp is not powered. Shouldn't the U1s be +/-15VDC?
The input does not say Sinewave and has no frequency. Is the input a DC voltage?