This flasher was found in an 80's Electronic Engineering but can be easily implemented with modern general purpose transistors. The frequency depends on C1.
This circuit was found in the March 1990 issue of Radio Electronics magazine. The circuit can be...
This circuit was found in a 1987 magazine. It generates signals in a range from 100 kHz to 10 MHz,...
Found in 1980s documentation, this circuit indicates the phase of a three-phase signal from the...