Patent · US Expired

Current sensor working in accordance with the compensation principle

US6713999B1 · kind B1 · utility

5Cited by

5References

5Claims

0Family size

Assignees

Vacuumschmelze GmbH & Co. KG · DE
SEMIKRON ELEKTRONIK GMBH & CO. KG · DE

Inventors

Friedrich Lenhard · Hanau, DE
Stefan Schafer · Aachen, DE
Paul Mourick · Ergolding, DE

Key dates

Filing date	Feb 15, 2002
Grant date	Mar 30, 2004
Priority date	—
Expiry date	Feb 15, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/185
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A current sensor (1) is provided with low-pass filters (17 and 18) for stabilizing the pulse-duration modulated compensation signal. The current sensor is also provided with an additional RC element (40). Furthermore, a limiting means consisting of Zener diodes (44) and an ohmic resistance (45) is provided for suppressing fast current transients.

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