Patent ID: 6054813
Filing Date: 2000-04-25
Classification: H05B,Y10S

Abstract:
A neon discharging lamp lighting apparatus, comprising:a high frequency inverter of which an asymmetrical ratio of an output voltage waveform thereof is designated from 10 to 60%, said high frequency inverter being composed of Royer circuit; anda low pressure type neon discharging lamp connected to said high frequency inverter;wherein the Royer circuit comprises:a power supply input terminal connected to a DC power supply;a pair of a first transistor and a second transistor whose bases are connected to said power supply input terminal and whose emitters are grounded; anda transformer having a first primary winding, a second primary winding, a third primary winding, and a secondary winding, the first primary winding having a center tap and being connected between a collector of said first transistor and a collector of said second transistor, the second primary winding being connected between said power supply input terminal and the center tap, the third primary winding being connected between the base of said first transistor and the base of said second transistor.