Institute Newton C. Braga

Circuit Bench

Biofeedback 555 (CB25001E)
We have many versions of biofeedback with the 555 IC on this site. This is another one. We found it...
4 decades rectangular generator CA3140 (CB9220E)
Using an operational amplifier of the time, this circuit was obtained from a 90s Radio...
Brake and direction indicator (CB7118E)
This circuit was suggested by Popular Electronics from the 90s. The circuit is quite simple using...