Patent · US Expired

Operating circuit for high-pressure discharge lamps with an ignition-time bridging function

US5917287A · kind A · utility

63Cited by

10References

5Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Markus Haederle · Gruibingen, DE
Josef Osterried · Ottobrunn, DE

Key dates

Filing date	Mar 20, 1998
Grant date	Jun 29, 1999
Priority date	—
Expiry date	Mar 20, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S315/04
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The circuit for operating a high-pressure gas discharge lamp (HID) has a ice (ZZU) for ignition-time bridging by switching in a second lamp (GL), the ignition-time bridging device (ZZU) being driven by a signal (S) indicating the operating state of the high-pressure discharge lamp (HID), and the drive signal (S) being an output signal of a power controller (R) of the circuit.

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