Institute Newton C. Braga

Circuit Bench

Coded Lock with Alarm (CB17377E)
We found this circuit in a year 2000 documentation. It must be powered by a voltage of 5 V as it...
Audio Shield (CB25430E)
This circuit found in the February 1992 issue of Radio Electronics magazine is designed to adapt an...
1 A Adjustable Power Supply LM109 (CB14501E)
The LM109, which is not common today, was manufactured by many semiconductor companies. This...