This circuit, suggested by an Electronics World of 1969, keeps a blinking LED for a while when a power outage occurs. Time depends on capacitor C1.
We found this circuit in the Radio Electronics magazine of February 1993. The main integrated...
Found in old American documentation, this circuit that can be used as a shield, activates two...
This circuit is more sensitive than the previous one (CB4118E) for using a full wave detector. The...