Patent ID: 7327095
Filing Date: 2008-02-05
Classification: H05B,Y02B

Abstract:
1. A discharge lamp lighting apparatus comprising: electric power regulating means for regulating electric power supplied from a power source, wherein said electric power regulating means has three terminals for respectively outputting a positive voltage, a ground voltage, and a negative voltage at a first wiring, a ground terminal, and a second wiring, respectively; a switching circuit including first and second switching elements controlling connection of said first and second wirings to a first electrode of a discharge lamp, the discharge lamp having a second electrode receiving a voltage level intermediate the positive and negative voltages; and a third switching element connected in series in one of the first and second wirings of said electric power regulating means and that is connected to said switching circuit, wherein said third switching element is in an OFF state during a standby period preparing for lighting of the discharge lamp.