Institute Newton C. Braga

Circuit Bench

Ionization chamber gas detector (CB9811E)
Found in documentation from the 1980s, this highly sensitive circuit is based on the conduction by the...
Sum and Difference Circuit (CB13926E)
The circuit transistors, found in a 1974 documentation, may be the BC548. The circuit is used in...
Boat or car flasher (CB9779E)
This SCR circuit, which can also be used for signaling places, was found in old American...