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    • 10. 发明申请
    • OVER-CURRENT PROTECTION CIRCUIT AND ELECTRONIC DEVICE WITH THE SAME
    • 过电流保护电路和电子器件
    • US20120293902A1
    • 2012-11-22
    • US13221920
    • 2011-08-31
    • REN-WEN HUANGQIANG YOUTSUNG-JEN CHUANGSHIH-FANG WONG
    • REN-WEN HUANGQIANG YOUTSUNG-JEN CHUANGSHIH-FANG WONG
    • H02H3/08
    • H02H3/087
    • An over-current protection circuit for preventing a function module from over-current, the function module obtains power from a power source via an input port. The over-current protection circuit includes a path switch, a current detection circuit, a conductor switch, a first control module, and a second control module. The current detection circuit and the path switch form a loop with the input port and the function module. The current detection circuit detects a value of a current of the loop, and produces a first control signal when detecting the current of the loop is equal to or greater than a predetermined current value. The first control module turns off the conductor switch when receiving the first control signal. The second control module turns off the path switch when the conductor switch is turned off, thereby cutting off the loop.
    • 一种用于防止功能模块过电流的过电流保护电路,功能模块经由输入端口从电源获得电力。 过流保护电路包括路径开关,电流检测电路,导体开关,第一控制模块和第二控制模块。 电流检测电路和路径开关与输入端口和功能模块形成一个环路。 电流检测电路检测回路的电流值,并且当检测到回路的电流等于或大于预定电流值时产生第一控制信号。 当接收到第一控制信号时,第一控制模块关闭导体开关。 当导体开关关闭时,第二个控制模块关闭路径开关,从而切断回路。