This flashlight project with a blinking light that makes it easy to find was found in the January 1990 issue of Radio Electronics magazine. The light uses a common light bulb.
This simple oscillator generates a 455 kHz signal. The circuit is from an 80's documentation and its...
This circuit was found in a 90s Popular Electronics. It is based on a Motorola double timer common at...
This circuit can be used as an answering password system in a store, office, or other location....