Institute Newton C. Braga

Circuit Bench

HF Generator (CB22464E)
This circuit is from a Popular Electronics from 1992. The circuit employs an equivalent transistor and...
Audio Operated Relay (CB5985E)
This circuit is from the 80's but uses common components today. The relay is voltage sensitive...
Harmonic Distortion Meter (CB26186E)
This complex circuit was found in the 1993 edition of the Electronics Experimenter's Handbook. Most of...