Patent ID: 7919927
Filing Date: 2011-04-05
Classification: H05B

Abstract:
1. A method of referencing a load to ground in a circuit, comprising: providing at least one capacitor and at least one inductor connected in series between the load and a first input terminal such that the capacitor and the inductor resonate in a series resonance to create a low impedance path between the load and the first input terminal, wherein the circuit further comprises: a second input terminal, a rectifier coupled to the first and second input terminals, a resonant circuit coupled to the rectifier, the resonant circuit including a resonant inductor, a resonant capacitor, and first and second voltage rails; first and second load terminals to energize a load; first and second clamping devices coupled so as to provide a circuit path between the first and second voltage rails; wherein the at least one capacitor is coupled between the first and second clamping devices and the rectifier.