Institute Newton C. Braga

Circuit Bench

Speed control with timer (CB20790E)
This circuit for alternating current loads has a built-in timer. SCR2 is according to the motor...
Square Signal Phase Detector (CB6670E)
This detector was found in an old Electronic Design using transistors of the time. The circuit can be...
1kHz Wien Bridge Oscillator (CB10956S)
This circuit came out in a Popular Electronics from December 1995. It is a Wien bridge...