Patent ID: 7830133
Filing Date: 2010-11-09
Classification: H05B,Y02B,Y10S

Abstract:
1. A method of supplying power to a load comprising the steps of: applying power to a current limiting circuit, the current limiting circuit being configured to limit one of leakage to ground current and leakage to neutral current to a selected average level; accumulating charge in a capacitance circuit disposed at an output of the current limiting circuit; selectively controlling discharge of the capacitance circuit into a power rail for powering a load connected to the power rail shunt regulating an output voltage on the power rail and using the output voltage to set an input voltage on the power rail; and receiving a pulse signal; wherein said selectively controlling step comprises operating a switch to control current discharged from the capacitance circuit to the power rail and controlling a duty cycle of the switch by selectively controlling the opening and closing of the switch in accordance with the pulse signal to determine voltage on the capacitance circuit when average current out of the current limited circuit is less than the selected average level.