About 18 results
https://drivepatents.com/patents/983561 · 9 Oct 2013
Circuits, systems, and methods are disclosed to eliminate the requirement for an external electromechanical contactor. Integrating contactor circuits with a motor controller reduces cost. Additionally, the cost of the contactor circuit may be reduced by pr...
https://drivepatents.com/patents/999520 · 8 Aug 2012
This document discusses, among other things, a method for disabling an internal power pack comprising receiving a command from an external source at a processor for a portable electronic device. The command can instruct the portable electronic device to di...
https://drivepatents.com/patents/1002746 · 2 May 2012
Generally, a system includes a control circuitry configured to detect a current wherein the detected current is one of a battery discharge current or a battery charging current; a first transistor configured to disconnect a load from at least one of a batt...
https://drivepatents.com/patents/1004522 · 7 Mar 2012
There is provided an electric circuit including a semiconductor switch that is inserted in a positive side power line; and converting means for converting an input voltage input to an input side terminal to a predetermined output voltage and for outputting...
https://drivepatents.com/patents/1011426 · 29 Jun 2011
A battery charging system (15) and method for state controlled charging of a battery (12). The battery charging system comprises two parallel paths (16, 17) for supplying charging current to the battery (12) from two parallel sources of charging current, a...
https://drivepatents.com/patents/1068336 · 12 Apr 2006
Provided is a switching device (3) including: a first switching element (5) primarily used for formation of a two-way current path; a second switching element (6) that forms, at the time when the first switching element (5) is turned off, a current path by...
https://drivepatents.com/patents/1068345 · 12 Apr 2006
Provided is a switching device (3) including: a first switching element (5) primarily used for formation of a two-way current path; and a second switching element (6) that interrupts a parasitic diode at the time when the first switching element (5) is tur...
https://drivepatents.com/patents/1076714 · 22 Jun 2005
A battery protection circuit is provided that includes a safety circuit and an overpower circuit. The safety circuit monitors the voltage and current of at least one rechargeable cell within the battery pack, and disconnects the cell(s) from the external t...
https://drivepatents.com/patents/1081143 · 29 Dec 2004
The device has a battery protection circuit (107a) stopping current, when current of a preset value or higher is output from a battery. A detection circuit detects current and voltage values of a preset circuit. A control circuit (108) executes an operatio...
https://drivepatents.com/patents/1083330 · 6 Oct 2004
Battery pack 10 may include rechargeable battery 12 and remaining capacity indicating circuit 14 for indicating the remaining capacity of the battery 12. Remaining capacity indicating circuit 14 may be coupled to the battery 12 via first switch SW1. When f...