This circuit also detects IR, providing LED indication. The circuit is used to indicate humidity in bench tests. We found it in the Radio Electronics magazine of February 1990.
This circuit was found in the August 1997 Electronics Now magazine. The FETs must be provided with...
This circuit provides an extremely stable, temperature-compensated reference current. The circuit is...
This simple servo can be built by coupling a potentiometer to a reduction box with a 3 to 6V...