This latching light alarm was found in the 1995 Encyclopedia of Electronic Circuits Volume 5. The circuit is powered with 12 V to provide a signal to a power stage.
This circuit generates signals from 0.01 Hz to 10 kHz, but uses unusual components today. The...
This circuit was obtained in a 1973s documentation. The transistors may be BC558 for the PNP and...
This CMOS circuit for LED displays is from a Radio Electronics magazine from February 1989. The...