3 ms·
> Feedback loops are notoriously hard to mitigate. "Amplifiers that oscillate and oscillators that won't are the two great fears of analog designers."
by B1FF_PSUVM 9y ago
> Feedback loops are notoriously hard to mitigate.
"Amplifiers that oscillate and oscillators that won't are the two great fears of analog designers."
- jacquesm 9y agoSo you work hard to keep that feedback gain under '1' in an amplifier and over '1' in an oscillator. Technically an amplifier with a feedback mechanism can become an oscillator and if you break the feedback loop in an oscillator you end up with 'just' an amplifier. To make this even more interesting: a negative feedback element in an amplifier will greatly enhance the frequency response at the expense of amplification (and will vastly reduce the chances of that amplifier turning into an oscillator).