Patent · US Expired

Circuit for starting an hid lamp

US6008591A · kind A · utility

12Cited by

6References

10Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Andreas Huber · Holzgerlingen, DE
Peter Niedermeier · Burghausen, DE

Key dates

Filing date	Mar 20, 1998
Grant date	Dec 28, 1999
Priority date	—
Expiry date	Mar 20, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S315/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Proposed for the purpose of starting a high-pressure discharge lamp is a cuit which in the conventional way comprises a starting transformer (12) whose secondary side is connected to the lamp to be started and whose primary side is connected to a circuit triggering the starting pulse, the circuit triggering the starting pulse generating starting pulses with a pulse duration of less than 0.5 .mu.s and a repetition frequency of at least 2 kHz. An IGBT (Insulated Gate Bipolar Transistor) (14) is preferably used as switching element.

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