Institute Newton C. Braga

Circuit Bench

Variac (CB17081E)
This electronic variac has the traditional configuration with triac already explored on the site,...
Twin-T (CB15695E)
The twin-T oscillator shown in the figure generates sinusoidal signals in the audio track, which...
Flasher (CB23587E)
This low-power circuit for small lamps according to transistors was found in the January 1959...