Institute Newton C. Braga

Circuit Bench

CB24842E Variable oscillator LF381 ()
This circuit with an operational amplifier was found in the magazine Radio Electronics of...
Outdoor light controller (CB7870E)
In fact, it is a night light system that automatically turns on the outside lights when it gets...
Adapter for power grid voltage reading (CB7943E)
This circuit is from a Popular Electronics from the 90s. The circuit requires extreme care in use, as...