This simple latching alarm circuit using CMOS gates was found in the May 1990 Radio Electronics magazine. The supply voltage is dependent on the relay.
The great advantage of the circuit shown in the figure is that its frequency is controlled by a...
Two or more 4013 can be cascaded to perform a divide-by-4 (-8, -16, etc.) as shown here. The...
August 2017 - Mouser Electronics is now offering the Diodes Incorporated AH1389 Hall Single-pole...