In a coulombmeter, the feedback impedance is a capacitor.
在库仑计中反馈电路为电容器。
In broader terms, the source impedance should be large compared to the feedback impedance of the meter.
广义地说，与仪表的反馈阻抗相比，源阻抗应当比较大。
This feedback being connected downstream Q1 transistor, the general behavior of this voltage supply is very sensitive to sensor impedance variation.
这个反馈被连接到下游的三极管Q1，此电源电压的特性，对阻抗的变化很敏感。
Figure 2-37 shows a generalized feedback circuit connected to a source impedance.
图2 -37示出连至源阻抗的一般反馈电路。
The magnitude of the source impedance can affect the noise performance of the feedback coulombmeter.
源阻抗的大小能够影响反馈库仑计的噪声性能。
In circuit design, the mathematical model of operational amplifier expanded function is expanded circuit. The circuit includes phase electric capacity, the feedback resistance and the input impedance.
运算放大器扩展功能，在电子电路设计中其数学模型为放大电路，含移相电容、反馈电阻及输入阻抗。
On the "simplifying" conditions, the transfer functions, as well as the input and output impedance expressions of the feedback amplifiers, are succinct; and, can be conveniently used.
在“简洁”条件下，反馈放大器的传递函数和输入、输出阻抗具有简洁和便于应用的形式。
Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.
并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。
Combined with wide band current feedback amplifier, FET input circuit and programmable circuit, variable gain amplification circuit with high speed and high input impedance is designed.
并以宽带电流反馈运算放大器为核心，辅以FET输入电路及程控电路构建了高速高输入阻抗可变增益放大电路。
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