Institute Newton C. Braga

Circuit Bench

Micro Power LED (CB12301E)
This circuit was obtained in an English publication from 1981. The 7555 is the CMOS version of the...
Walkie Talkie (CB20470E)
This intercom for the 27 MHz band was found in a recent English documentation, working with a...
Capacitance multiplier (CB7803E)
We found this circuit in an old Popular Electronics. The circuit can be applied to other...