Title:
POWER SUPPLY CIRCUIT, POWER SUPPLY DEVICE, AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/056320
Kind Code:
A1
Abstract:
Provided are a power supply circuit (10), a power supply device, and a control method. The power supply circuit (10) comprises a primary rectification unit (11), a modulation unit (12), a transformer (13), a secondary rectification and filtering unit (14), a current feedback unit (15), and a control unit (16). A liquid-state electrolytic capacitor on a primary side is removed in the power supply circuit (10), so that the power supply circuit has a smaller size and is safer in use. In addition, the control unit (16) can determine the voltage type of an inputted alternating current, and can set a limited-current value in the current feedback unit (15) according to the voltage type of the alternating current, so that the power supply circuit (10) is more flexibly used.
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| WO/2002/061908 | SAFETY CIRCUIT FOR POTENTIOMETRY |
| WO/2016/030483 | ELECTRONIC CIRCUIT BREAKER |
| WO/2004/034543 | METHOD AND DEVICE FOR SWITCHING ON A POWER SWITCH ARRANGED BETWEEN CAPACITIVE ELEMENTS |
Inventors:
TIAN CHEN (CN)
ZHANG JIALIANG (CN)
ZHANG JIALIANG (CN)
Application Number:
PCT/CN2017/103010
Publication Date:
March 28, 2019
Filing Date:
September 22, 2017
Export Citation:
Assignee:
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP LTD (CN)
International Classes:
H02H9/00; H02M7/00; H05B37/02
Foreign References:
| CN101860236A | 2010-10-13 | |||
| CN106507540A | 2017-03-15 | |||
| CN202206602U | 2012-04-25 | |||
| CN105430812A | 2016-03-23 | |||
| US8254149B2 | 2012-08-28 |
Other References:
See also references of EP 3657660A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC. (CN)
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