From the negative feedback aspect of the parallel voltage, this paper quantitatively discusses input and output resistances by employing 4 methods.
从并联电压负反馈的角度，对输入电阻和输出电阻给出了下列4种方法的定量讨论。
The negative feedback regulation of output voltage and various protective mechanisms are realized.
实现了对输出电压的负反馈调节及各种保护机制。
At the power output, OCL complementally and symmetrical power amplifier is adapted. The output sine voltage becomes smooth and stable by adding voltage-negative-feedback to power amplifier.
在功率输出级采用OCL互补对称功率放大电路，并对该功放电路增加电压负反馈，使得输出的正弦电压信号平滑而稳定。
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