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In class, we were asked to design an amplifier with a given output of 3V using op amps. The output remains the same irrespective of the voltage at the input. I really need assistance getting through this.
During my electronic tutorials on filters, I was told that the corner frequency of RL filters and RC filters is where the gain deviates by -3db.
however, there was no stated reason why it had to always be -3db.
I would love to know the reason why it has to be -3db
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