Institute Newton C. Braga

Circuit Bench

Digital tachometer (CB7376E)
Found in Radio Electronics from the 90s, this circuit uses components from that time. However, it...
Astable 555 with two potentiometers (CB25510E)
This circuit has both frequency and duty cycle control. We found it in the October 1992 Radio...
3 to 5 V inverter (CB9157E)
This circuit supplies 5 V from two AA batteries. The output current is 4 mA, resulting in an 11 mA...