Institute Newton C. Braga

Circuit Bench

Metal detector (CB7959E)
Found in a 90’s 303 Circuits, this circuit uses components that are still common and has a common...
PUT 40 Hz to 40 kHz oscillator (CB8288E)
Found in Unitrode documentation from the 1980s, this circuit makes use of PUTs, currently common...
Electronic Handler for Dogs and Cats (CB18597E)
The presented project is of great use for owners of dogs and cats who, many times, need to travel...