Patent · US Expired

System for the elimination of radio interference and method for its manufacture

US4543554A · kind A · utility

45Cited by

3References

4Claims

0Family size

Assignee

Vacuumschmelze GmbH & Co. KG · DE

Inventors

Thomas Muellenheim · Alzenau, DE
Hans-Joachim Nilius · Seligenstadt, DE

Key dates

Filing date	Jan 26, 1982
Grant date	Sep 24, 1985
Priority date	—
Expiry date	Jan 26, 2002

Classification

Technology area (CPC H)Electricity
CPC primaryH03H7/427
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In a system for the elimination of radio noise, both balanced-to-ground as well as unbalanced-to-ground noise currents are employed. Attenuation is achieved by employing current-compensated noise elimination chokes whose leakage inductance is increased by a magnetic shunt. In order to simply manufacture a magnetic shunt which can be distributed well over the windings, the choke is provided in a container filled with a casting compound, and a powder consisting of a material with good magnetic conductivity is embedded in the casting compound in the proximity of the choke.

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