Institute Newton C. Braga

Circuit Bench

CW Monitor (CB21439E)
This circuit for monitoring telegraphy transmissions was found in a 1975 CQ magazine. Transistors may be...
Pulse Width Modulator MC1455 (CB14587E)
The integrated circuit used in this application is like the 555. The components depend on the...
MW Receiver (CB4616E)
The circuit presented is a simple MW tuner that can be plugged into the input of any audio...