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Ignition transformer for a discharge lamp

A technology for transformers and discharge lamps, applied in electric light sources, electrical components, lighting devices, etc., can solve the problems of ignition transformer loss, converter loss, etc., and achieve the effect of less electromagnetic interference and compact structure.

Inactive Publication Date: 2009-11-11
OSRAM GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when using the above-mentioned capacitors in high-frequency operation of the lamp, the inductance of the secondary winding remains in the lamp current circuit, so that losses occur not only in the ignition transformer, but also in the converter supplying the high-frequency lamp current. Loss occurs in

Method used

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  • Ignition transformer for a discharge lamp
  • Ignition transformer for a discharge lamp
  • Ignition transformer for a discharge lamp

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Embodiment Construction

[0029] exist figure 1 A circuit arrangement 1 according to the invention with an ignition transformer 2 is shown in .

[0030] Primary winding 4 of ignition transformer 2 is fed with pulse source 6 and ignition voltage U2 . The primary winding 8 of the ignition transformer 2 is connected in series with the discharge lamp 10 and passes the driving voltage U Q to feed. Preference is given to using high-pressure gas discharge lamps, for example mercury-containing metal-halide vapor lamps of the type "OSRAM HQI", as discharge lamps.

[0031] exist figure 2 The discharge lamp 10 in a base 12 is shown in . The burner 12 has a pulse source 6 via which the primary winding 4 of the ignition transformer 2 is fed. Ignite transformer 2 as figure 2 Shown in is preferably ring-shaped and has a transformer core 14, such as image 3 is shown with an air gap 15 . A secondary winding 8 is mounted on the transformer core 14 , which is surrounded by the primary winding 4 .

[0032] if ...

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Abstract

Disclosed is an ignition transformer for a discharge lamp, comprising a transformer core. The material and the size of the transformer core are selected such that following the ignition by means of the ignition transformer, the Curie temperature of the material can be reached using a voltage drop above a secondary winding of the ignition transformer, thus leaving merely a residual inductance for the secondary winding. Also disclosed is a base for a discharge lamp, comprising such an ignition transformer. Preferably, at least some sections of the discharge vessel of the lamp protrude into the central hole of the ignition transformer in the base, resulting in a compact base with a discharge lamp.

Description

technical field [0001] The invention is based on an ignition transformer for igniting a discharge lamp, preferably a high-pressure gas discharge lamp, by means of a pulse ignition device, wherein high-frequency operation of the lamp takes place on an electronic ballast after ignition. Background technique [0002] The circuit arrangement for a high-pressure discharge lamp described in publication WO 2005 / 011338 has a drive part with a direct voltage source and an ignition part with a pulse source and a mercury-free halogen metal vapor high-pressure discharge lamp. In the ignition part, the discharge lamp is connected in series with the secondary winding of the ignition transformer. The primary winding of the ignition transformer is excited by a pulse source. Particularly low-loss materials are preferred as materials for ignition of the transformer core. After the discharge lamp is ignited by the pulse source and the ignition transformer, the secondary winding is connected ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B41/04
CPCH05B41/04
Inventor 伯恩哈德·西塞格曼弗雷德·勒尔
Owner OSRAM GMBH
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