Patent · US Expired

High-pressure discharge lamp having decoupled ignition and load circuits

US5990633A · kind A · utility

22Cited by

9References

30Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Guenther Hirschmann · Munich, DE
Stefan Mueller · Villingen, DE
Matthias Mengele · Munich, DE
Christian Wittig · Munich, DE
Bernd Lewandowski · Feldafing, DE

Key dates

Filing date	Jun 22, 1998
Grant date	Nov 23, 1999
Priority date	—
Expiry date	Jun 22, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B20/00
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to circuitry for the operation of a high-pressure dharge lamp including a voltage transformer (T1, T2), preferably a push-pull transformer, a transformer (TR1) connected to the output of the voltage transformer (T1, T2), a pulse ignition device, and a load circuit designed as a ocrial resonance circuit (L1, C1) into which the high-pressure discharge lamp (LP) is switched. The transformer (TR1) possesses at least two secondary windings (w1c, w1d), wherein the first secondary winding (w1c) switches into the load circuit and the second secondary winding (w1d) is connected to the pulse ignition device at the voltage input. The ignition voltage output of the pulse ignition device is designed to be connected to an auxiliary ignition electrode (ZE) of the high-pressure discharge lamp (LP).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.