Institute Newton C. Braga

Circuit Bench

Sgnal tracer (CB23815E)
This circuit uses Only passive components and have to be plugged to the input of an audio...
40 meters band CW transmitter (CB8730E)
We found this circuit in a 90s 73 magazine for radio amateurs. The circuit has 3 W of power and can...
Canine Feeder for 3 Meals (CB18135E)
This circuit was found in a 2006 publication. It can serve as the basis for a microcontrolled...