Patent · US Expired

Circuit arrangement for controlling a load and for recognizing a line interruption

US5570259A · kind A · utility

10Cited by

2References

7Claims

0Family size

Assignees

Siemens Aktiengesellschaft · DE
Harris Semiconductor GmbH · US

Inventors

Franz Allmeier · Mintraching, DE
Theodor Maier · Aiglsbach, DE
Gerhard Goeser · Pentling, DE
Donald R. Preslar · Somerville, US
Philip Murphy · Pavia, IT

Key dates

Filing date	Aug 9, 1993
Grant date	Oct 29, 1996
Priority date	—
Expiry date	Aug 9, 2013

Classification

Technology area (CPC H)Electricity
CPC primaryH02H1/0038
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A circuit arrangement for controlling a load and for recognizing an interruption in a line to the load includes a measuring resistance connected in series with the load, a device for varying a resistance value of the measuring resistance as a function of a current passing through the load, and a diagnostic device for generating a diagnosis signal if a voltage drop, producible across the measuring resistance by a load current drops below a threshold value.

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