This circuit was found in General Electric documentation from 1964. It makes use of a PUT, called the PNPN planar key at the time. The circuit has two supply voltages.
Up to 0.5 A DC motors can be controlled by this circuit. Direction change is achieved by a logic...
This circuit activates a relay when the conducting bars (probes) are held by a person. The circuit is...
This circuit with PUT was found in a 1980s documentation. The component used is uncommon and the...