Institute Newton C. Braga

Circuit Bench

Universal speed control (CB20783E)
This control, which may appear in other versions on this site, was found in documentation from the...
Piezoelectric Alarm (CB6425E)
We found this circuit in a 1991 Hobbyst Electronics. The circuit makes use of an unusual...
Micro Touch Control (CB20312E)
This circuit turns a relay on or off by touching the sensors or by connecting sensors at these...