Institute Newton C. Braga

Circuit Bench

Level indicator (CB23803E)
This neon lamp level indicator circuit uses low voltage power supply. The circuit was found in a...
Dataphone (CB9404E)
This simple circuit found in a 1968 EEE was intended for data transmission over the telephone...
Amplifier for multimeter (CB23868E)
This circuit had its assembly described in a Radio Electronics from March 1963. The circuit uses 2...