This biestable touch circuit was found in American 1980s documentation. The circuit must not be powered by a source without a transformer. Sensitivity depends on the 10 M resistors.
This circuit indicates a digital value through a moving bar. The circuit is TTL and must be...
This circuit was found in an Electronic Engineering of the 80s. The circuit indicates when a...
This configuration is from an old Motorola publication from the 70s. In it we have the way to...