Technology News
Vibration harvesters designed to replace AA, AAA batteries
Japan's Brother Industries Ltd., best known as a producer of printers, has developed vibration energy harvesters in form factors to allow them to replace AA and AAA batteries, according to a Tech-On article.
Inside the battery-shaped case is an electromagnetic induction generator and a 500-mF capacitor for storage. The output of the AA-size generator is 10 to 180-mW, the report said and versions have been produced that provide power at 1.6- and 3.2-V, while a AAA unit that generates 2.7-V has also been produced.
The units are only suitable for equipment with low duty cycles, such as remote controls and provide about 100-mW of power, while remote controls typically consume between 40-mW and 100-mW when in use, the report said.
Brother Industries plans to exhibit the AA and AAA energy harvesters at the Techno-Frontier exhibition in Japan July 21 to 23 showing it running a TV remote control, a remote control for lighting and a LED flashlight, the report said.
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