This circuit was found in an 80s Hands On Electronics. It senses the water level in a reservoir by driving a pump when needed.
August 2017 - Texas Instruments is making available through Mouser Electronics the new integrated...
This circuit for audio signals was found in the March 1990 Radio Electronics magazine. The circuit...
Found in an English publication from 1967, this circuit generates 5 kHz signals with harmonics that...