This re-triggerable circuit was found in the April 1988 Radio Electronics magazine. Timings are given by R1 and C1.
This circuit trips when a negative pulse is applied to its input or when the voltage drops below a...
This is an old 1988 circuit consisting of a timer or time control for exposing silk-screen arrays. The...
This circuit was taken from an old American documentation. It can be built with modern op amps. The...