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 mutes a system when a phone call is received. The circuit is from a Radio Electronics from...
This circuit was found in an Electronics Now from the 90's. The integrated regulator circuit and...
The purpose of this circuit found in an American 1980s documentation is to produce a current pulse to...