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单词 Wien bridge
释义
Wien bridge

Electronics and Electrical Engineering
  • A four-arm bridge that is used for the measurement either of capacitance or frequency. A typical network is shown in the diagram. At balance, when a null response is obtained from the indicating instrument,

    CxCs=(RbRa)(RsRx)

    CsCx=1ω2RsRx

    where ω is the angular frequency. For the measurement of a frequency f, it is convenient to make Cs = Cx, Rs = Rx, and Rb = 2Ra so that

    f=(2πCR)1

    Wien bridge

    Wien bridge


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