JPH0192098U

JPH0192098U -

Info

Publication number: JPH0192098U
Application number: JP18681487U
Authority: JP
Priority date: 1987-12-07
Filing date: 1987-12-07
Publication date: 1989-06-16

Description

[Brief explanation of the drawing]

第１図は本考案の放電灯の点灯装置の一実施例
の概略の電気回路図、第２図は第１図の詳細な電
気回路図、第３図および第４図はそれぞれ他の発
振素子を用いた場合のプツシユプル動作およびシ
ングル動作の一部の電気回路図、第５図は２灯を
点灯する場合の電気回路図である。１…商用交流電源、２…全波整流器、３…イン
バータ、４…インピーダンス素子、５…電解コン
デンサ、６…発振回路、８…駆動用変圧器、８Ａ
…１次巻線、８Ｂ，８Ｃ…２次巻線、９，１０…
主スイツチング素子、１１，１２…コンデンサ、
１３…限流用インダクタンス素子、１３Ａ，３７
Ｃ…２次側巻線、１４…コンデンサ、１５…整流
回路。 Fig. 1 is a schematic electrical circuit diagram of one embodiment of the discharge lamp lighting device of the present invention, Fig. 2 is a detailed electrical circuit diagram of Fig. 1, and Figs. 3 and 4 respectively show other oscillation elements. FIG. 5 is a partial electric circuit diagram of the push-pull operation and single operation when using the . 1... Commercial AC power supply, 2... Full wave rectifier, 3... Inverter, 4... Impedance element, 5... Electrolytic capacitor, 6... Oscillation circuit, 8... Drive transformer, 8A
...Primary winding, 8B, 8C...Secondary winding, 9,10...
Main switching element, 11, 12... capacitor,
13... Current-limiting inductance element, 13A, 37
C... Secondary winding, 14... Capacitor, 15... Rectifier circuit.

Claims

[Scope of utility model registration request]

In a device for full-wave rectifying commercial alternating current with a full-wave rectifier, supplying this pulsating current or smoothed DC power to an inverter, and lighting a discharge lamp with the high-frequency output of this inverter, the full-wave rectifier is An impedance element and an electrolytic capacitor are connected in series between the positive and negative output terminals, with the impedance element being located on the positive output terminal side, and the inverter is connected to a power source at the intermediate connection point between the impedance element and the electrolytic capacitor. An oscillation circuit to which terminals are connected, a driving transformer to which DC power is intermittently supplied to a primary winding by the oscillation output of this oscillating circuit, and each of a pair of secondary windings of this driving transformer. It is configured in a separately excited type with a pair of main switching elements that are alternately controlled on and off by the output, and a series circuit of a pair of capacitors connected in parallel to the series circuit of both main switching elements, and a series circuit of a pair of capacitors connected in parallel to the series circuit of both main switching elements. A current-limiting inductance element connected in series between the intermediate connection point and the intermediate connection point of both main switching elements, a parallel circuit of a discharge lamp and a capacitor, and a secondary winding on the same core as the inductance element. A lighting device for a discharge lamp, comprising a side winding and a rectifier circuit that full-wave rectifies the output of the secondary winding and applies the full-wave rectification to both ends of the electrolytic capacitor.