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Power/Alternative Energy??

USB-powered battery charger for NiCd/NiMH batteries

Posted: 26 May 2008 ?? ?Print Version ?Bookmark and Share

Keywords:application note? battery charger? rechargeable battery?

The growing popularity of wireless computer peripherals such as the wireless mouse, keyboard and similar devices is likely to spur demand for a device that can be recharged rapidly. Rechargeable batteries are also widely used in peripheral and non-computer related appliances. The charger described in this application note from Cypress Semiconductor, authored by Svyatoslav Paliy, can easily be incorporated into computer peripherals. For example, one battery can be located in a mouse or another wireless device, and a second battery inserted into a combination host/charger that is connected to the USB port of a computer. When the battery in the peripheral device is drained, the user can simply swap the two batteries. Moreover, this charger can charge or discharge user batteries under manual charge control. The user can control the charger from PC software, immediately stopping or starting the charge process. As an added option, it is possible to discharge the battery before charging. This lets the user train batteries using a discharge-charge cycle.

View the PDF document for more information.





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