This circuit was found in a 1970 IEEE publication. The circuit functions as a voltage controlled variable resistor and can be used with audio signals. Transistors admit current equivalents.
This circuit was found in a General Electric documentation from 1970. It is used in an optical...
This circuit can generate signals from 100 kHz to 50 MHz depending on the crystal and the...
We found this circuit in a 1968 Electronics World. The transistors are from the era and...