We found this circuit in the May 1972 issue of Radio Electronics magazine. Its purpose is to teach logic using integrated circuits of the TTL family. The 5 V power supply is included.
The circuit is from 1968, but we can use a modern one like the 741. The symmetrical power supply...
This circuit was found in a 90s Hands On Electronics. It monitors the presence of voltage in a...
This circuit with a few watts of power was found in the April 1995 issue of Electronics Now...