Institute Newton C. Braga

Circuit Bench

5 W Amplifier - TIP31-TIP32 (CB1005E)
This excellent amplifier with complementary symmetry output stage was taken from one of my audio...
42 kHz oscillator (CB21805E)
This circuit was used as an eraser for old tape recorders. The circuit is from a 1960 Mullard...
Rectangular Signals from Other Signals (CB3801E)
This circuit, found in 1980s documentation, produces a rectangular signal of the same frequency as the...