对静态位移的测量，二极管检波或乘法检波后分别得到的是一含多频或单频交流成分的脉动直流信号，而乘除法检波后信号不含交流成分。

The DC signals after demodulation still contain AC component of one or several frequencies respectively for multiplication or diode methods, but no AC component for multiplication-Division one.

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介绍了隧道二极管的特性，研究了隧道二极管并联放大器的静态特性，主要性能指标和偏置要求。

For the tunnel diode parallel amplifier, quiescent operation point, circuit specification and offset voltage are studied.

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