Institute Newton C. Braga

Circuit Bench

Voltage controlled oscillator (CB12758E)
This VCO works in the opposite way to the previous circuit, converting continuous voltages into...
TTL Flasher 7400 (CB479)
Two LEDs are used in this TTL circuit. Frequency is given by C1 and C2. Power supply must be a 5 V...
Tachometer with Direction of Rotation Indicator (CB11572E)
The circuit presented is from an old magazine having been translated and published in a national...