Institute Newton C. Braga

Circuit Bench

High Power Flasher (CB21344E)
We found this circuit in an American documentation. The power of the load, in this case,...
Proximity Sensor (CB4899E)
This circuit was found in a 1980s English publication, but can still be easily assembled by the...
Operational Voltmeter (CB14855E)
Using an operational amplifier with FET, this voltmeter has a high input resistance. The circuit has...