A power supply circuit, a power supply device and a control method are provided. The power supply circuit includes primary rectifier unit, modulation unit, transformer, secondary rectifier filter unit and control unit. The power supply circuit removes the liquid electrolytic capacitance of the primary side, which makes the power supply circuit smaller and safer to use. In addition, the output current of the power supply circuit is the current whose current value changes periodically, and the control unit can control the output current including the time period when the current value is 0, thus ensuring the periodic charging and discharging of batteries in the equipment to be charged.
【技术实现步骤摘要】
【国外来华专利技术】PCT国内申请,说明书已公开。
【技术保护点】
PCT国内申请,权利要求书已公开。
【技术特征摘要】
【国外来华专利技术】PCT国内申请,...
【专利技术属性】
技术研发人员:田晨,张加亮,
申请(专利权)人:OPPO广东移动通信有限公司,
类型:发明
国别省市:广东,44
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