This circuit can flash for up to 30 months using alkaline batteries as shown in the table next to the diagram. The circuit is from a Radio Electronics from January 1992.
This circuit trips by shorting the load to quickly blow the fuse when the voltage exceeds a...
Epson SG 8018 Epson Crystal Programmable Oscillators Available from Mouser Electronics, these...
This circuit works with the previous two by demodulating the signals received modulated in FM. The...