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 Vibration-powered generating batteries recharge when shaken

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Date posted: 18/07/2010

Whether you're away from electricity or you don't mind expending a few of your own calories, a new generator allows you to recharge it simply by shaking it. Its developer, Brother Industries Ltd, says that the "vibration-powered generating battery" can replace AA and AAA batteries for devices that have a power consumption of about 100 mW, such as a flashlight or remote control.

Although the new gadget is technically a small generator, it is designed to fit inside a battery-shaped case. Inside the case is the generator as well as a capacitor that has a capacitance of about 500 mF. The company has developed prototypes in which the generator and capacitor both fit into a single battery-size case, and prototypes in which the generator and capacitor each have their own battery-size case, in which the capacitor has a greater voltage.

To recharge the unit, the entire device containing it (such as a flashlight or remote control) can be shaken. The company hopes that the new approach to recharging could cut down on the amount of batteries used in low-power electronics.

"The new generator will semipermanently eliminate the need to replace batteries and contribute to reducing the amount of wastes," Brother Industries said.

See the full Story via external site: www.physorg.com

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