Institute Newton C. Braga

Circuit Bench

Switch Amplifier (CB21820E)
A circuit for controlling the temperature of a heating element was found in a Mullard transistor manual...
33 dB gain Audio Stage (CB23531E)
This circuit is from a Radio Electronics from October 1963. The transistor is a power transistor of the...
Electronic Morse Key (CB7313E)
This circuit was found in the magazine of radio amateurs 73 in a 90's edition. The components are...