Heathkit IP18 Power Supply (CB24321E)

This is the circuit of a power supply supplied in a kit at the time. The circuit is in the September 1974 Radio Electronics magazine.

| Clique na imagem para ampliar |

Touch Switch (CB24202E)
This circuit is from an article in Radio Electronics magazine from August 1972. The circuit is...
Constant current regulator for lamps (CB8696E)
Found in 1969 RCA documentation, this circuit maintains constant current in the filament of a lamp...
Crystal Oscillator (CB20114E)
The integrated circuit used in this application is uncommon today. The circuit is from American...