Institute Newton C. Braga

Circuit Bench

Changing the frequency of the LED blinking (CB24661E)
The figure shows how to change the frequency of a 5 V LED blinking. The capacitor can have other...
Band pass active filter 1 kHz (CB5196E)
The operational amplifier using this 80's circuit is a double 741 of the time. The circuit may be...
SSB Beat Oscillator (CB22034E)
This circuit was found in old English documentation. The coil must match the tuned range. The...