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 Home > News > Mobiles > Murata ...
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Monday, July 05, 2010
Murata Develops Wireless Power Transmission System

Murata has developed a field-coupled type of power transmission system capable of supplying power to devices wirelessly.

Use of this system makes it possible for the devices to be charged simply by placing them on the charger without the aid of power cords or other physical connections.

As mobile devices have continued to proliferate, wireless power transmission systems have been the focus of many development projects of late. However, one issue with the electromagnetic induction system that is the subject of many such projects is the fact that charging is not possible unless the device concerned is placed exactly at the charging point. Murata Manufacturing teamed up with TMMS Co., Ltd. (Technology Marketing & Management Solutions), which has its own field-coupled wireless power transmission technology, and utilized this technology to jointly develop a wireless power transmission system. With the use of this system, devices can be charged without having to be concerned about the location of the charging point.

Field-coupled system The field-coupled system is a method that involves positioning electrodes at the power-sending and power-receiving ends and transmitting energy using the electrical fields generated between these electrodes. Since a capacitance is generated between the electrodes, it is also called a capacitive coupling system.

The system can be used to charge cell phones, mobile music players, digital still cameras, notebook PCs and other mobile devices, lighting fixtures, decorations, housing equipment and other related products

The LXWS series

Transmitted power 1~10W
Transmitting efficiency More than 90% by wireless transmission part alone

External Size
Power-sending module: 50 x 25 x10 mm (target size for 3W models)
Power-receiving module: 10 x 10 x 1.5 mm (target size for 3W models)

Start of mass production targeted for 2011
Monthly production to start with 10,000 units

Sample Prices
To be determined for individual orders; mass production target price of 980 yen for power-sending module and power-receiving module together (for orders received when the monthly production runs to 100,000 units)

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