This regulator or voltage reference consists of a variable zener diode. We found it in the June 1984 issue of Radio Electronics magazine. The output current is low.
This circuit with analog indicator and diode bridge was found in Radio Electronics magazine from...
This is the typical audio amplifier for a 1967 television. We found it in a magazine from the...
This 4013 bistable has only a touch sensor that turns the controlled load on and off at its...