電源アダプタ

Japanese Patent JP5394400

B2

A power adapter includes a primary side for receiving power from a mains power supply; a secondary side for providing operating and/or charging power, derived from the primary side, to an electronic device connected to the secondary side; presence logic for determining whether the electronic device is connected to the secondary side; and switching logic for turning off the primary side automatically when the presence logic determines the electronic device is not connected. The power adapter thus shuts itself down if no electronic device is attached, and automatically starts itself up when a device is connected to the power adapter and is thus needed. The power adapter may also include voltage detection logic that detects when the device is fully charged. The power adapter also shuts itself down when an attached electronic device becomes fully charged, and automatically starts itself up when the charged state of the electronic device falls below a predetermined level. While shut down, the power adapter consumes either no power or very little power. The power adapter may wake itself up and provide power to a device even in the event the device itself is without power, such as when the device is turned off and/or has a flat or dead battery.

JP3668195	MANUFACTURING METHOD OF BATTERY PACK AND BATTERY PACK MANUFACTURED BY THE METHOD
JPH01298918	CHARGER

Bogenholm, Fredrik
Serenson, Stephan
Omerobik, Idriss
Herring Slack, Henrik

JP2010542696A

January 22, 2014

September 02, 2008

Click for automatic bibliography generation  

Sony Mobile Communications, AB

H02J7/00; H01M10/44; H01M10/46; H01M10/48; H02J7/10; H02M7/04

JP11299093A
JP8221157A
JP2000166090A
JP2003080800A
JP2002132398A
JP4165957A

US20070047270

Yasunori Otsuka
Shiro Takayanagi
Yasuhiro Otsuka
Shuji Kimura

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