JPS63137498U

JPS63137498U -

Info

Publication number: JPS63137498U
Application number: JP2970187U
Authority: JP
Priority date: 1987-02-27
Filing date: 1987-02-27
Publication date: 1988-09-09

Description

[Brief explanation of the drawing]

第１図乃至第３図は何れも本考案の放電灯の点
灯装置の各実施例の電気回路図である。１……商用交流電源、２……全波整流器、３，
４……電解コンデンサ、５，６……スイツチング
素子、７……駆動用変圧器、７Ａ，７Ｂ……駆動
巻線、７Ｃ……帰還巻線、８……放電灯、１１，
１２……放電用ダイオード、１５，１６……コン
デンサ、１７……限流素子、２１，３８……高周
波トランス、２１Ａ，３８Ａ……一次巻線、２１
Ｂ，２１Ｃ，３８Ｂ……二次巻線、２２，２３，
３６，３７，３９……整流回路。 1 to 3 are electrical circuit diagrams of each embodiment of the discharge lamp lighting device of the present invention. 1...Commercial AC power supply, 2...Full wave rectifier, 3,
4... Electrolytic capacitor, 5, 6... Switching element, 7... Drive transformer, 7A, 7B... Drive winding, 7C... Feedback winding, 8... Discharge lamp, 11,
12... Discharge diode, 15, 16... Capacitor, 17... Current limiting element, 21, 38... High frequency transformer, 21A, 38A... Primary winding, 21
B, 21C, 38B...Secondary winding, 22, 23,
36, 37, 39... Rectifier circuit.

Claims

[Claims for Utility Model Registration] (1) A device that full-wave rectifies commercial alternating current using a full-wave rectifier, smoothes this pulsating current, supplies direct current power to an inverter, and lights a discharge lamp with the high-frequency output of this inverter. A pair of switching elements are connected in series between the positive and negative output terminals of the full-wave rectifier and are alternately controlled on and off by each output of a pair of drive windings of a drive transformer; A series circuit of a pair of smoothing electrolytic capacitors connected in parallel and a diode for discharging them, a pair of capacitors connected in parallel and in series to both of the switching elements, and an intermediate connection point between the two switching elements. and a series circuit of a feedback winding wound around the drive transformer, a current limiting element, and a discharge lamp connected between the intermediate connection point of both capacitors, and a primary A high frequency transformer whose windings are connected in parallel, an input terminal is connected to the secondary winding of this high frequency transformer, and a rectified output terminal is connected to both ends of each of the electrolytic capacitors or to both ends of a series circuit of both electrolytic capacitors. 1. A lighting device for a discharge lamp, comprising a rectifier circuit. (2) A pair of rectifiers in which a series circuit consisting of an electrolytic capacitor and its discharging diode is connected in parallel to a pair of switching elements, and the input side terminals of each are connected to a pair of secondary windings of a high-frequency transformer. The lighting device for a discharge lamp according to claim 1, wherein each rectifier output terminal of the circuit is connected to both ends of each electrolytic capacitor. (3) A pair of electrolytic capacitors connected in parallel to each switching element and a pair of diodes for discharging these capacitors are connected in series to the positive and negative output terminals of the full-wave rectifier, and the secondary winding of the high frequency transformer is The lighting device for a discharge lamp according to claim 1, wherein a voltage doubler rectifier circuit is connected between both ends of the series circuit of both electrolytic capacitors.