Patent · US Expired

Circuit arrangement with power factor correction, as well as a corresponding appliance

US7120003B2 · kind B2 · utility

0Cited by

10References

12Claims

0Family size

Assignee

Thomson Licensing · FR

Inventors

Wolfgang Hermann · Lechenich, DE
John Stolte · Memmingen, DE
Jean-Paul Louvel · Brigachtal, DE

Key dates

Filing date	Apr 12, 2003
Grant date	Oct 10, 2006
Priority date	—
Expiry date	Apr 12, 2023

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02B70/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The circuit arrangement has a mains connection, a mains switch with two switching contacts, a demagnetization coil and a switch-mode power supply, which contains a driver circuit for producing a control voltage for the switching transistor of the switch-mode power supply. A first switching contact of the mains switch is arranged between the mains connection and the demagnetization coil in order to switch the demagnetization coil on and off, and the second switching contact is connected to a supply or control voltage for the driver circuit, in order to switch off the switch-mode power supply. In consequence, a power factor coil can be used between the mains connection and the switch-mode power supply for power factor correction, without the mains switch being loaded by the inductance of the power factor coil.

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