Patent · US Expired

Automotive electrical power supply system with reverse polarity indication

US4390792A · kind A · utility

3Cited by

6References

7Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Friedhelm Meyer · Mühlacker, DE
Wolfgang Kurz · Hemmingen, DE
Joachim Severing · Ludwigsburg, DE

Key dates

Filing date	Jul 7, 1981
Grant date	Jun 28, 1983
Priority date	—
Expiry date	Jul 7, 2001

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S320/20
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

To provide a positive indication that a battery has been reversely connected to a self-contained electrical network, for example a vehicular or boat network, a diode (24) of low current carrying capacity is connected across the terminals (25, 26) of the network, poled in blocking direction. Upon erroneous or reverse connection of the battery (13) with reverse terminals, the diode will immediately burn out, thus providing positive identification of such a reverse connection, even if only of such short time duration that the main rectifier diodes were not yet damaged. To prevent spurious replacement of the diode and thus elimination of the indication, the diode (24) can be molded into or cemented into a depression or groove formed in the insulating support plate (28) supporting the rectifier element.

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