Patent ID: 7230814
Filing Date: 2007-06-12
Classification: F42C

Abstract:
1. An electrical, digital switch system for supplying power to a load, the switch system including a built-in secure mechanism to prevent accidental turn on of the load, the switch system comprising: a controller and input circuit for receiving a pulse of temporary power for powering the controller, the controller being unpowered prior to receipt of the pulse of temporary power, the controller being operable to produce a first enable output and after a time delay a second enable output; a first switch coupled to the first enable output and being operable responsive thereto to provide a first output voltage, said first output voltage being coupled to said controller to continue powering said controller even after said pulse of temporary power has been inactivated; and a second switch coupled to the first output voltage and coupled to the second enable output and being responsive thereto to provide a second output voltage which is suitable for being coupled to supply power to the load.