This circuit is from an 80's Radio Electronics. The circuit has several output options for 50 mA currents with load indicator through LEDs.
The voltage regulator integrated circuits of the 78XX series can be found with voltages from 5 v...
Found in American documentation from the 90s, this circuit uses a high voltage relay and has no...
The MC33064 can also be used on this circuit of Motorola's 1993 Linear Interface ICs. The circuit...