This circuit can keep a set of lamps on for up to 1 minute, time given by C2 and R2 that can be changed. The load depends on the relay. The circuit is old, from 1988 documentation, but totally viable today.
March 23, 2016 - Mouser Electronics, Inc. is now offering gallium nitride (GaN) solutions from...
This 1995 circuit uses an audio amplifier that is no longer common today. However, other...
The integrated circuit used in this regulator is not very common today. The circuit is from old...