Patent · US Active

Filter

US7667988B2 · kind B2 · utility

12Cited by

6References

25Claims

0Family size

Assignee

Schaffner EMV AG · CH

Inventors

Norbert Haeberle · Solothurn, CH
Peter Kull · Moutier, CH
Andrew Cecil TUCKER · Elmore, AU

Key dates

Filing date	Jan 3, 2007
Grant date	Feb 23, 2010
Priority date	—
Expiry date	Feb 4, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E40/40
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

EMC filter, for connection between a mains supply network and a mains-operated appliance to reduce conduction noise between said supply network and said appliance, comprising a voltage divider connected to said mains network, for generating a voltage lower than a voltage of said mains network; rectifying means, connected to an output of said voltage divider, for generating a DC voltage; and an electronic active circuit, supplied by said DC voltage, for absorbing a noise current transmitted between said supply network and said appliance.

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