Patent · US Expired

Low-power low-voltage power supply

US6760233B2 · kind B2 · utility

5Cited by

3References

19Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Tobias Georg Tolle · Aachen, DE
Thomas Duerbaum · Eschweiler, DE
Pieter Jan Mark Smidt · Eindhoven, NL

Key dates

Filing date	Jul 10, 2002
Grant date	Jul 6, 2004
Priority date	—
Expiry date	Aug 8, 2022

Classification

Technology area (CPC H)Electricity
CPC primaryH02M7/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrical circuit arrangement provides a low power rectified low voltage from an AC line voltage. The circuit consists of two circuit blocks combined together via an intermediate circuit, of which the first circuit block contains a capacitive input stage for producing a voltage-limited intermediate voltage that is substantially less than the line voltage, and a second circuit block that contains an asymmetric half-bridge that receives the intermediate voltage and produces an AC voltage that is decoupled from the line voltage via a transformer that is operated at the substantially lower voltage. The output of the transformer is rectified to provide the low-level DC output.

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