This General Electric circuit was found in a 1964 documentation. The circuit triggers a relay when the sensor is activated. Trigger adjustment is done in a trimpot.
This circuit was suggested by Motorola in a 1980s publication. It is based on a PUT that is not a...
The purpose of this circuit is to control magnetic door locks activated by the power grid. The...
We found this circuit in an old English documentation from 1979. The circuit is very sensitive, because...