This circuit from Radio Electronics from February 1983 shows how to use a clock radio in home appliance control. The circuit uses Triacs and TTL logic.
This small FM transmitter for clandestine listening has a good range and should be powered by a 9...
This circuit has a high input impedance and provides a good signal at its output. The power must...
This traditional metronome configuration uses unusual transistors in the original version, but it...