This circuit behaves as a voltage controlled resistor and can serve as a small load. The circuit is from a Radio Electronics from July 1988.
This 1975 documentation circuit must use a 6 to 9 V symmetrical source and the signal cables must...
With the circuit shown in the figure it is possible to digitally control the gain of an...
The audio amplifier integrated circuit used in this 1990 project is not very common today....