JPS63127098U

JPS63127098U -

Info

Publication number: JPS63127098U
Application number: JP1922887U
Authority: JP
Priority date: 1987-02-12
Filing date: 1987-02-12
Publication date: 1988-08-19

Description

[Brief explanation of drawings]

第１図は本考案の放電灯の点灯装置の一実施例
の電気回路図、第２図は第１図の詳細な電気回路
図、第３図は本考案の他の実施例の電気回路図、
第４図は本考案のさらに他の実施例の一部の電気
回路図である。１……商用交流電源、２……全波整流器器、３
……平滑コンデンサ、４……インバータ、５，５
′……放電灯、６……駆動用変圧器、６Ａ，６Ｂ
……駆動巻線、６Ｃ……帰還巻線、７，８……ス
イツチング素子、９，１０……コンデンサ、１１
，１１′……限流素子、１２……インピーダンス
素子、１３……交流スイツチ素子、１４……タイ
マ回路。 Figure 1 is an electric circuit diagram of one embodiment of the discharge lamp lighting device of the present invention, Figure 2 is a detailed electric circuit diagram of Figure 1, and Figure 3 is an electric circuit diagram of another embodiment of the present invention. ,
FIG. 4 is a partial electrical circuit diagram of still another embodiment of the present invention. 1...Commercial AC power supply, 2...Full wave rectifier, 3
...Smoothing capacitor, 4...Inverter, 5,5
'...Discharge lamp, 6...Drive transformer, 6A, 6B
... Drive winding, 6C ... Feedback winding, 7, 8 ... Switching element, 9, 10 ... Capacitor, 11
, 11'... Current limiting element, 12... Impedance element, 13... AC switch element, 14... Timer circuit.

Claims

[Scope of utility model registration request]

In a device that full-wave rectifies commercial alternating current with a full-wave rectifier, supplies DC power obtained by smoothing this pulsating current to an inverter, and lights a discharge lamp with the high-frequency output of the inverter, the positive and negative side outputs of the full-wave rectifier A pair of switching elements connected in series between terminals and controlled to be turned on and off alternately by each output of a pair of drive windings of a drive transformer, and a pair of capacitors connected in series in parallel to both switching elements. , a feedback winding wound around the drive transformer, a current limiting element, a discharge lamp, and a preheating impedance element connected in series between an intermediate connection point of both the switching elements and an intermediate connection point of both the capacitors; , an AC switch element connected in parallel to the impedance element, and a timer circuit that outputs a gate signal to the gate terminal of the AC switch element after a certain period of time has elapsed from power-on. lighting device.