About 66 results
https://drivepatents.com/patents/1077927 · 11 May 2005
The present invention provides a charging device (15) capable of reducing the number of power elements required for setting a charging current, thereby achieving a reduction in size and a low manufacturing cost. A circuit structure for a main charging is a...
https://drivepatents.com/patents/1078708 · 6 Apr 2005
A field effect transistor (T1) with gate, source and drain is connected between the anode and cathode of the diode, the cathode being connected to the drain. The non inverting input (+) of the operational amplifier (OP1) is connected to the anode and its i...
https://drivepatents.com/patents/1081596 · 15 Dec 2004
In accordance with the teachings described herein, systems and methods are provided for charging a rechargeable power source in a mobile device through a USB port. A power converter may be used to receive an input voltage from an external power source and ...
https://drivepatents.com/patents/1086620 · 9 Jun 2004
A method is provided for charging a plurality of batteries (55,56). A plurality of batteries (55,56) may be charged using charging voltage/current characteristics. Charging operations among the multiple batteries (55,56) may be repeatedly performed. A firs...
https://drivepatents.com/patents/1090338 · 14 Jan 2004
A charging station for rechargeable batteries comprises charging electronics (2) in a housing (3) having battery locating and connection points (4). A blower (6) produces and air stream (L) through two openings (7a,7b) one of which is linked to the connect...
https://drivepatents.com/patents/1093751 · 27 Aug 2003
A battery protection circuit is achieved. The circuit comprises, first, a FET switch. Last, a control circuit determines the ON/OFF state of the FET switch. The FET switch and the control circuit comprise a single integrated circuit device. The control cir...
https://drivepatents.com/patents/1095916 · 21 May 2003
A power source circuit is provided which is capable of improving an efficiency of using energy of a chemical battery cell (11) and of responding suitably to an intermittent change in a load current. Since, during a load burst period in an odd-numbered orde...
https://drivepatents.com/patents/1096359 · 2 May 2003
In case of the present invention, a microcomputer (271) controls a charging mode changeover switch (275) and connects the switch to a terminal (275d) to change the terminal (275d) to an initial charging mode power source (278). In this case, the microcompu...
https://drivepatents.com/patents/1102825 · 31 Jul 2002
A protection circuit of the above discussed type by providing the control logic (10) with an over-voltage detector (14). The over-voltage detector (14) is activated and closes a short-circuit switch (20) when the over-voltage detector (14) reaches a fixed ...
https://drivepatents.com/patents/1105221 · 17 Apr 2002
The present invention relates to a charging circuit (1) for charging a mobile terminal (2) of a wireless telecommunication system through a USB interface of a computer (3), with first connection means (4) for connection with the USB interface of a computer...