广义地说，与仪表的反馈阻抗相比，源阻抗应当比较大。
In broader terms, the source impedance should be large compared to the feedback impedance of the meter.
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。
This feedback being connected downstream Q1 transistor, the general behavior of this voltage supply is very sensitive to sensor impedance variation.
图2 -37示出连至源阻抗的一般反馈电路。
Figure 2-37 shows a generalized feedback circuit connected to a source impedance.
没有反馈电阻的仪表放大器提供精确增益，无论增益多大，放大器的同向和反向输入端提供高输入阻抗。
An instrumentation amplifier offers precise gain without feedback resistors, and, at any value of gain, it provides high input impedances at its noninverting and inverting inputs.
源阻抗的大小能够影响反馈库仑计的噪声性能。
The magnitude of the source impedance can affect the noise performance of the feedback coulombmeter.
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。
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.
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.
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。
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.
从逆变器等效输出阻抗的角度，对基于输出电压和滤波电感电流双闭环瞬时反馈控制技术的逆变器并联系统的环流特性进行了研究。
Output characteristic is one of the most important characteristics of voltage source inverter, which is determined by the equivalent output impedance of the inverter.
在该电源的输入与负载之间连接了一只阻抗器，通过接入反馈控制网络自动调整阻抗器的电阻值，即可稳定输出电压。
A impedor is connected between the input and the load. The impedor is automatically adjusted by linking feed back loop for the purpose of stabilizing the output voltage.
在该电源的输入与负载之间连接了一只阻抗器，通过接入反馈控制网络自动调整阻抗器的电阻值，即可稳定输出电压。
A impedor is connected between the input and the load. The impedor is automatically adjusted by linking feed back loop for the purpose of stabilizing the output voltage.
应用推荐