Patent · US Expired

Circular, amorphous metal, Hall effect magnetic field sensor with circumferentially spaced electrodes

US4668914A · kind A · utility

66Cited by

4References

6Claims

0Family size

Assignee

International Standard Electric Corporation · US

Inventors

Peter Kersten · Leonberg, DE
Hans Volz · Schwieberdingen, DE
Ulrich Seyfried · Stuttgart, DE

Key dates

Filing date	Dec 7, 1984
Grant date	May 26, 1987
Priority date	—
Expiry date	Dec 7, 2004

Classification

Technology area (CPC H)Electricity
CPC primaryH10N52/85
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A magnetic field sensor is disclosed with which the direction of a magnetic field can be determined by using the planar Hall effect. An active layer of the sensor is made of a ferromagnetic amorphous metal which is magnetically isotropic. Thus, the magnetization in the active layer always has the direction of an external magnetic field. The developed planar Hall voltage is a measure of the direction of the magnetic field.

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