This circuit was described in an article in the February 1993 Radio Electronics magazine. The frequency depends on the crystal and L1 is optional.
This circuit was obtained in a 1964 Electronic Design. The circuit uses components from that time,...
The circuit below shows how to obtain a monostable from a CMOS 4013 flip-flop. The actuation time...
This project was found in a 1988 documentation. The circuit intermittently activates an aquarium...