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Subject: Re: Discrete variable gain amplifier
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Date: 05/24/02 at 8:04 AM
Posted by: Russ Kincaid
In Reply to: Discrete variable gain amplifier posted by NIck on 05/22/02 at 5:56 PM:
If you look up AGC (automatic gain control) circuits, you will find many ideas. Also, an FET is a variable resistor which can be used in the feedback of an op amp. I believe there is an IC designed for gain control, you will have to look for it.
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