Institute Newton C. Braga

Circuit Bench

TV Pattern Generator (CB4315E)
This 1989 circuit generates horizontal bars on the screen of an old analog television. The circuit...
Digital Variable Capacitor (CB189E)
The values of the capacitance between output A and ground can be programmed digitally in 18 steps...
Stereo Balance Indicator (CB12301E)
This circuit is from a 1977 technical documentation. Diodes D1 and D2 can be 1N34 or any other of...