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    • 32. 发明申请
    • Power Supply Circuit Capable of Handling Direct Current and Alternating Current and Power Supply Control Method
    • 电源电路能够处理直流和交流和电源控制方法
    • US20120001599A1
    • 2012-01-05
    • US13027947
    • 2011-02-15
    • Masayasu Tanaka
    • Masayasu Tanaka
    • G05F1/70
    • H02M1/10H02M1/4208Y02B70/126Y10T307/658
    • According to one embodiment, a power supply circuit includes an input terminal, a rectifier circuit, a power factor improvement circuit, a DC/DC converter, and a control module. The DC/DC converter converts the level of a DC voltage output from the power factor improvement circuit. The control module determines on the basis of the output voltage of the rectifier circuit whether an input power supply supplied to the input terminal is AC or DC. The control module generates a DC power supply by use of the power factor improvement circuit and DC/DC converter when the input power supply is AC and generates a DC power supply by controlling the operation of the power factor improvement circuit and DC/DC converter according to the voltage of input DC power supply when the input power supply is DC.
    • 根据一个实施例,电源电路包括输入端子,整流器电路,功率因数改善电路,DC / DC转换器和控制模块。 DC / DC转换器转换从功率因数改善电路输出的直流电压的电平。 控制模块基于整流电路的输出电压确定供给输入端的输入电源是AC还是DC。 控制模块通过使用功率因数改善电路和DC / DC转换器在输入电源为AC时产生直流电源,并通过控制功率因数改善电路和DC / DC转换器的运行来产生直流电源, 当输入电源为DC时,输入直流电源的电压。