Patent · US Expired

Electronic transformer with good immunity against high-voltage pulses

US6603674B2 · kind B2 · utility

3Cited by

4References

11Claims

0Family size

Assignee

Patent-Treuhand-Gesellschaft fur elektrische Gluhlampen mbH · DE

Inventors

Felix Franck · Hersbruck, DE
Helmut Haeusser-Boehm · Munich, DE
Joachim Muehlschlegel · Puchheim, DE

Key dates

Filing date	Dec 5, 2001
Grant date	Aug 5, 2003
Priority date	—
Expiry date	Dec 5, 2021

Classification

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

Abstract

Electronic transformers with a self-excited half bridge can be destroyed by high-voltage pulses from the mains supply lead. This can happen by the high-voltage pulse initiating a starting operation which leads to cross currents. This destruction mechanism is suppressed by specifically discharging a starting capacitor.

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