Monday, March 7, 2011

CrazyEngineers Forum - Electrical & Electronics Engineering

CrazyEngineers Forum - Electrical & Electronics Engineering


Voltage controlled resistor

Posted: 06 Mar 2011 03:53 PM PST

Hello,
I would like to make a variable resistance controlled by voltage in order to get variable resistance for gain. I want the resistance change to be linear with the voltage. could you help me to find the circuit either by using transistor or by using op-amp.

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