Institute Newton C. Braga

Circuit Bench

Zero crossing switch (CB20623E)
This circuit trips when the input signal goes through zero, triggering a direct current load. The...
Battery Tester (CB6517E)
Found in a 1980s German publication, this circuit tests batteries by type. The circuit is based on a...
Phase Shift Oscillator (CB12065E)
In the figure we have the traditional configuration of a phase shift oscillator that produces a...