Institute Newton C. Braga

Circuit Bench

Small audio amplifier (CB22503E)
Found in a 1966 publication, this circuit has fractional watts of power, serving as a...
High Frequency Crystal Oscillator (CB18285E)
This circuit can generate signals up to a few megahertz, depending on the transistor used. The...
Power Supply Monitor (CB13408E)
This circuit was obtained in a 1977 National Semiconductor manual. Its purpose is to monitor the...