Institute Newton C. Braga

Circuit Bench

Sensitive electronic relay (CB23762E)
We found this circuit in Radio Electronics magazine from October 1966. The circuit uses a 15 V...
Mechanical Oscillator (CB20496E)
This circuit can be used in decoration or to draw attention, in a “fake” assembly for example. What he...
TTL Siren (CB9080E)
This simple TTL siren was found in a 1980s Electronics Today International. The power supply is 5 V...