Institute Newton C. Braga

Circuit Bench

SCR Relaxation Oscillator (CB12717E)
This type of oscillator uses an unusual configuration and can be used as a time base, metronome or rhythm...
100 MHz Overtone Oscillator (CB6508E)
This circuit of a 73 American magazine from the 1990s can generate multiple frequency signals from the...
Nicad Charger and Regulated Adapter (CB17659E)
This is another one of the many versions of Nicad battery chargers that we have on the website and in...