Patent · US Expired

Storage coil with air gap in core

US4728918A · kind A · utility

8Cited by

5References

5Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Paul Neusser · Munich, DE
Werner Rössler · Neufahrn, DE

Key dates

Filing date	Aug 2, 1985
Grant date	Mar 1, 1988
Priority date	—
Expiry date	Aug 2, 2005

Classification

Technology area (CPC H)Electricity
CPC primaryH01F38/023
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A storage coil for flux converters or low setting control elements is disclosed. The storage coil has a non-linear d-c bias characteristics associated with a ferrite core. The ferrite core may be a shell core, E core, RM core and U core, with an air gap formed between adjacent end faces of core parts, the adjacent end faces being oriented toward each other to provide a contact area without an air gap less than the overall cross-sectional area of the core and air gap of varying spacing occupying the area remaining between the contact area and the overall cross-sectional area.

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