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US09407103B2 Battery charger noise reduction by variable frequency 有权
电池充电器可变频率降噪

Battery charger noise reduction by variable frequency
Abstract:
A method of charging a battery in a charging system having a power convertor that converts AC electrical power to DC electrical power, the method comprising generating a carrier signal having a carrier frequency that continuously varies between a minimum carrier frequency value and a maximum carrier frequency value, and operating a switching component of the power convertor using the carrier signal.
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