• 分析压电式超声波换能器的等效电路,并等效电路输入阻抗导纳确定了换能器的元器件参数以及谐振频率机械品质因数工作带宽等特征参量。

    The device parameter as well as resonance frequency, mechanical quality factor and work band width were determined by the equivalent circuit input impedance admittance circle diagram.

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  • 根据接收机前端等效电路模型,建立噪声系数等效输入噪声电流密度关系

    Based on the equivalent circuit model of a two-port optical receiver front-end, the relationship between the equivalent input noise current spectral density and the noise figure is analyzed.

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  • 基于等效电流电路模型分析基础上,推导单相单位功率因数变流器输出电流谐波计算公式,将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。

    Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.

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  • 基于等效电流电路模型分析基础上,推导单相单位功率因数变流器输出电流谐波计算公式,将输出二次谐波电流正、反向交替注入交流输入侧来抵消电流中的谐波。

    Derived the formula for computing quadratic harmonics of output current in the single phase unit power factor ac DC converter based on analysis of the circuit module of the equivalent current source.

    youdao

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