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    • 3. 发明申请
    • Capacitor drop type power supply circuit and air conditioner
    • 电容器跌落式电源电路和空调
    • US20080180978A1
    • 2008-07-31
    • US11984752
    • 2007-11-21
    • Satoru FujitaYuuichi ItoiYoshio Yajima
    • Satoru FujitaYuuichi ItoiYoshio Yajima
    • H02M7/06
    • H02M7/06H02H9/041
    • To provide a capacitor drop type power supply circuit that can withstand a surge-current generated at power-on by use of inexpensive elements without requiring a complicated circuit configuration. A capacitor drop type power supply circuit includes: an AC power supply (1) connected to a series circuit of a resistor (2), a first capacitor (3), and a first diode (4) whose cathode is connected to the first capacitor (3) ; a series circuit of a second diode (5) and a Zener diode (6), which is parallel-connected to the first diode (4); and a second capacitor (7) parallel-connected to the Zener diode (6), the circuit outputting a DC voltage generated across the second capacitor (7).
    • 提供一种电容器滴式电源电路,其能够通过使用便宜的元件来承受在通电时产生的浪涌电流,而不需要复杂的电路配置。 一种电容器滴式电源电路,包括:连接到电阻器(2),第一电容器(3)和第一二极管(4)的串联电路的交流电源(1),其阴极连接到第一电容器 (3); 与第一二极管(4)并联连接的第二二极管(5)和齐纳二极管(6)的串联电路; 和并联连接到齐纳二极管(6)的第二电容器(7),该电路输出跨过第二电容器(7)产生的直流电压。