Browse Prior Art Database

Reversed Battery Polarity Protection

IP.com Disclosure Number: IPCOM000117974D
Original Publication Date: 1996-Aug-01
Included in the Prior Art Database: 2005-Mar-31

Publishing Venue

IBM

Related People

Authors:
Kangas, PD Minikel, HT Williams, DW [+details]

Abstract

This disclosure describes a method for preventing circuit damage by restricting reverse current flow in the event that the battery is installed with the polarity reversed. This method provides a low cost means of restricting reverse current flow without the added voltage drop of a simple diode, significant leakage current (important for high lifetime batteries such as for time of day clocks), or the added expense of a special battery receptacle.