Institute Newton C. Braga

Circuit Bench

Electronic Dice (CB11522E)
This digital electronic dice was found in a 1977 magazine, but it can be easily assembled today, as...
Power Oscillator (CB22065E)
The audio signal generated by the oscillator stage is amplified by an LM380 and reproduced with...
Reverse Alert (CB4780E)
This circuit uses indicator lamps, as it was obtained from an American publication of the 90s. The...