Found in General Electric's documentation from 1970, this circuit is indicated for the so-called “Solid State Lamp” (SSL). The LED symbol in the original diagram is inverted.
June 2017 - New high power TVS for high-power retention applications with bi-directional features...
This fast-acting circuit uses any phototransistor as a sensor. The circuit drives a 30 V relay, but...
This transistor can use any general-purpose germanium transistor like CK722 or 2N107. The circuit is...