Institute Newton C. Braga

Circuit Bench

Ultrasonic remote control transmitter (CB8397E)
Found in a 90s Popular Electronics, this circuit excites a 40 kHz ultrasonic transducer. The...
Two FETs FM Transmitter (CB14879E)
The circuit shown is from a 1993 documentation. It uses two FETs in an oscillating configuration that...
Universal Charger (CB24072E)
This battery charger circuit was found in the August 1970 issue of Radio Electronics magazine. The circuit...