Institute Newton C. Braga

Circuit Bench

Impedance Meter (CB13947E)
The FET for this circuit from a 1977 documentation can be BF245 or MPF102. The circuit measures...
Power supply with voltage quadrupler (CB22343E)
Found in documentation from the 1960s, this power supply employs germanium diodes from the time....
Strobe with Incandescent Lamp (CB11849E)
This circuit with Triac causes an ordinary incandescent lamp to flash rapidly at a frequency set...