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.
Suggested by General Electric in a 1980s publication, this circuit is intended for coupling...
We find this circuit in the 80s used integrated circuit manual itself. The integrated circuit is not...
This simple musical instrument was obtained from a 1967 magazine. If the original transistors are...