Institute Newton C. Braga

Circuit Bench

Audio Shield (CB17322E)
This circuit was originally developed in 1989 to allow the triggering of loads from audio signals...
DC Motor Linear Control (CB11267E)
This simple speed control for 3 to 15 V motors uses a common power transistor. The circuit was...
Telephone call extension (CB10152E)
This circuit triggers a remote bell or buzzer when receiving a phone call. It is indicated for...