Patent · US Active

Method and device for identifying a polarity of a freewheeling diode, actuator circuit and safety device for a vehicle

US9981621B2 · kind B2 · utility

1Cited by

2References

10Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Steffen Walker · Reutlingen, DE
Ruediger Karner · Kornwestheim, DE

Key dates

Filing date	May 6, 2014
Grant date	May 29, 2018
Priority date	—
Expiry date	Jun 7, 2034

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60R2021/01204
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for identifying a polarity of a freewheeling diode interconnected in parallel to an inductive actuator for a safety unit for a vehicle. The method includes applying a test current to a terminal of the freewheeling diode and carrying out a comparison between a voltage present at the terminal and a threshold voltage while the test current is being applied, a result of the comparison indicating the polarity of the freewheeling diode.

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