Institute Newton C. Braga

Circuit Bench

Photo Timed Voice Relay (CB16823E)
This interesting circuit, which can be used as an alarm, was found in a 1997 documentation. It...
Electronic Ignition (CB17452E)
This circuit dates to 1999, when most vehicles did not yet have electronic ignition and used...
Optical receiver (CB20697E)
Found in an American documentation from the 90s, this circuit works as a receiver for a data...