We found this circuit in a Radio Electronics magazine from November 1976. The clock frequency is divided by 10 and the maximum value depends on the integrated circuits used.
Intended for SSB and CW reception, this circuit was found in old English documentation. The...
Using two transistors, the resting current for this alarm is 25uA. The circuit was found in an...
This simple rain, leak or moisture detector circuit appears in other places on this site with...