VOLTAGE_CONTROLLED_VARIABLE_GAIN_AMPLIFIER_1

Published:2009/6/23 2:01:00 Author:Jessie | From:SeekIC

The 2N5457 acts as a voltage variable resistor with an Rds(on) of 800 ohms max. Since the differential voltage on the LM101 is in the low mV range, the 2N5457 JFET will have linear resistance over several decades of resistance providing an excellent electronic gain control.



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