- 专利标题: POWER SUPPLY CIRCUIT, POWER SUPPLY DEVICE AND CONTROL METHOD
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申请号: US16415479申请日: 2019-05-17
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公开(公告)号: US20190280515A1公开(公告)日: 2019-09-12
- 发明人: Chen TIAN , Jialiang ZHANG
- 申请人: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
- 主分类号: H02J7/06
- IPC分类号: H02J7/06 ; G05F1/56
摘要:
Provided are a power supply circuit, a power supply device and a control method. The power supply circuit includes a primary rectifier unit, a modulation unit, a transformer, a secondary rectifier and filtering unit, and a control unit. In the power supply circuit, a liquid electrolytic capacitor at a primary side is removed, such that a volume of the power supply circuit is smaller, and is safe to use. Moreover, an output current of the power supply circuit has a periodically changing current value, and the control unit can control the duration of the output current in which the current value is 0.
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