Patent ID: 8093820
Filing Date: 2012-01-10
Classification: H02M,H05B,Y10S

Abstract:
1. A gas discharge lighting system comprising: one or more gas discharge lighting devices; a source of input power; a electronic ballasting circuit having a regulated direct current requirement coupled between said one or more gas discharge lighting devices and said source of input power comprising: an alternating-to-direct current conversion means; a power regulator connected to said alternating-to-direct current conversion means converting its output to said regulated direct current required to operate said ballasting circuit; a controllable output direct current to alternating current inverter that operates with a substantially square wave output at a frequency above that of audible sound; an impedance network interposed between said inverter and said one or more gas discharge lighting devices comprising of at least one resonating inductor and one capacitor to modify the substantially square wave output of said inverter to provide proper operation of said one or more gas discharge lighting devices; a controlling device that controls the operation of said inverter and thus, via said impedance network, an amount of power delivered to said one or more gas discharge lighting devices; a low voltage direct current power supply to provide power to said controlling device as well as switching power to said controllable output direct current to alternating current inverter; a switching device connected to the output of said alternating-to-direct current conversion means to source power to said low voltage direct current power supply when operation first commences; and a first additional winding on said resonating inductor with its output rectified to produce direct current to supply said low voltage direct current power supply after operation has commenced with said switching device, that is connected to the output of said alternating-to-direct current conversion means, biased into the non conduction mode by the rectified output of said first additional winding on said resonating inductor.