Patent ID: 7719817

Claim:
A method for supplying power to control circuitry of a power control device, the power control device including at least one controllably conductive device, the method comprising: charging a capacitor through a load to a predetermined high voltage only when said controllably conductive device is in a non-conductive state, wherein the controllably conductive device is connectable to the load in a two wire mode and controls whether or not the load is being energized; and drawing current from said capacitor using a converter having a predetermined efficiency to provide a power supply voltage for operation of said control circuitry both when the load is being energized and when the load is not being energized, wherein the controllably conductive device controls the load to be energized when the controllably conductive device is in a conductive state and not to be energized when the controllably conductive device is in the non-conductive state.