Institute Newton C. Braga

Circuit Bench

General Purpose Preamplifier (CB6977E)
This circuit was found in a Popular Electronics from the 90s. The circuit uses general purpose...
Square Generator (CB20139E)
This old circuit from the 80's generates logic signals with 50% active cycle (squares). The...
Reed Switch triac control (CB12238E)
In the figure we have the way to control a TIC series triac with a reed switch. The current in the...