The RCA integrated circuit used in this control is uncommon today. The circuit is from an Electronics Now from July 1995. The sensor determines the value of the adjustment potentiometer.
This sound effect circuit is from a Radio Electronics magazine from December 1969. The transistors...
This few-watt amplifier was found in the August 1975 issue of Radio Electronics magazine. The...
We found this simple test of zener diodes in a 1978 publication. The potentiometer can be...