Institute Newton C. Braga

Circuit Bench

2.5 W Transistorized Amplifier (CB1316E)
This amplifier with complementary symmetry output and good sound quality was found in...
Automatic Doorbell (CB16652E)
This circuit was found in a 1992 publication. Its purpose is to time the activation of a doorbell...
Touch switch (CB22069E)
This circuit only uses two general purpose transistors triggering a sensitive relay. Never supply...