本文针对小信号情况下运放有限增益和有限带宽对开关电容网络的影响，提出了利用离散域运放宏模型分析此问题的方法。
In this paper, the effects of the Op · Amp finite gain and bandwidth on the performance of sc networks in small signal are discussed and a method using Z-domain Op · Amp macromodel is presented.
本文中的电压传感器采用电阻分压，可将初级电压直接转化为10v以内的微信号，以供测量保护用，装置具有体积小、传输频带宽、不存在饱和问题、无谐振点等优点。
By adopting resistance divider, the voltage sensor designed in this paper can transform primary voltage into micro-signal less than 10v, which can be used in measurement system directly.
本文中的电压传感器采用电阻分压，可将初级电压直接转化为10v以内的微信号，以供测量保护用，装置具有体积小、传输频带宽、不存在饱和问题、无谐振点等优点。
By adopting resistance divider, the voltage sensor designed in this paper can transform primary voltage into micro-signal less than 10v, which can be used in measurement system directly.
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