Patent · US Expired

Electronic circuit arrangement having polarity reversal protection

US5764465A · kind A · utility

19Cited by

1References

2Claims

0Family size

Assignee

Autoliv ASP, Inc. · US

Inventors

Bernhard Mattes · Sachsenheim, DE
Ralf Henne · Sachsenheim, DE
Bernd Saufferer · Neckargemünd, DE

Key dates

Filing date	Feb 26, 1997
Grant date	Jun 9, 1998
Priority date	—
Expiry date	Feb 26, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R21/01
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A MOS field-effect transistor (T2) is provided in conjunction with transistors (T1 and T3) as polarity reversal protection in an electrical circuit arrangement (1). Polarity reversal protection of this type is realized by the drain-source path of the transistor (T2). Transistors (T1 and T3) form a comparator. If the drain-source voltage of the transistor (T2) becomes negative then the transistor (T3) switches on. This, in turn has the effect of switching off the transistor (T2) thereby providing polarity reversal protection. The electronic circuit arrangement (1) configured according to the invention can advantageously be used in an airbag system (10).

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