Institute Newton C. Braga

Circuit Bench

100 kHz Oscillator (CB22379E)
This is the single-sourced version of the previous oscillator. Frequency can be changed by...
Neon Voltage Indicator (CB23694E)
This is a commercial circuit found in Radio Electronics magazine from September 1960. The circuit has...
Anti Sleep Alarm (CB18464E)
This circuit is from a 1998 Poptronics. The circuit triggers a buzzer after a certain time, waking...