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Is a voltage follower really simple?

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PythonGuython:
Hello I'm somewhat new to electronics and I've been designing a vocoder. Right now I've been working on a voltage follower that will provide the control voltage to my voltage controlled amplifiers in each frequency band. Is a voltage follower as simple as a rectifier? Or maybe a rectifier would lag the voltage too much? Let me know if the question is not clear.

OM222O:
rectifier is not a voltage follower at all! just google op amp voltage follower, any op amp should be able to take care of audio frequencies without an issue.

ledtester:

--- Quote ---Let me know if the question is not clear.

--- End quote ---

A "voltage follower" can have various implementations but usually doesn't involve a "rectifier".

This page talks about an "envelope follower":

https://www.instructables.com/id/Build-an-analog-vocoder/

Is that what you are referring to?


PythonGuython:
Yes that is what I meant, sorry! Not a voltage follower, an envelope follower

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