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    • 42. 发明授权
    • Current Sensor
    • 电流传感器
    • US07400131B2
    • 2008-07-15
    • US11554366
    • 2006-10-30
    • Norbert Preusse
    • Norbert Preusse
    • G01R33/00
    • G01R15/185G01R15/148
    • A current sensor comprises a magnetic module, whereby a primary conductor, a compensating winding and a magnetic field probe are magnetically coupled to each other. The primary conductor carries a current to be measured, with a driving circuit, for producing a triangular current, injected into the compensating winding. An evaluation circuit switches the output signal thereof from a first to a second output level and vice versa by a zero crossing of a signal, provided by the magnetic field probe, whereby the output signal is pulse-width modulated, depending on the intensity of the current to be measured.
    • 电流传感器包括磁性模块,由此主导体,补偿绕组和磁场探针彼此磁耦合。 主导体带有用于产生三角形电流的驱动电路被测量的电流注入到补偿绕组中。 评估电路通过由磁场探针提供的信号的过零点将其输出信号从第一输出电平切换到第二输出电平,反之亦然,由此输出信号被脉冲宽度调制,这取决于 要测量的电流。