输入电阻

Thus, the small signal differential amplification circuit with high input resistance is the best choice.

因此，小信号差动放大电路与高输入电阻是最好的选择。

An electrometer makes an ideal coulombmeter because it has very low input offset current and high input resistance.

静电计是一个理想的库仑计，因为它具有非常低的输入偏置电流和很高的输入电阻。

Input resistance is usually similar to that of a DMM and is much lower than that of an electrometer.

输入电阻类似于数字多用表，而远低于静电计。

Therefore, a voltmeter with high input resistance, such as an electrometer, is required.

所以需要使用具有高输入电阻的电压表，例如静电计。

An electrometer preamplifier is used at the input to increase sensitivity and raise input resistance.

在其输入端采用一个静电计前置放大器以提高灵敏度并提高输入电阻。

To minimize circuit loading, the input resistance of an

为了尽量降低电路负载，安培计的输入电阻应当很小以便降低输入端压降（V2）。

Voltage measurements from high resistance sources are subject to loading errors from the meter input resistance, as well as the leakage resistance ofthe connecting cable.

对高内阻电压源的测量容易产生由仪表输入电阻和连接电缆泄漏电阻引起的负载误差。

This paper puts forward the derivation of precise calculating formula used to determine the magnification ratio of voltage, input resistance and output resistance in amplifying circuits based on the feedback circuit model with parallel voltage.

在建立电流并联反馈电路模型的基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。

precise calculating formula is derivated to determine magnification ratio of voltage,input resistance and output resistance in amplifying circuits based on th feedback circuit model with cascade voltage.with th new calculating methods put forward by the author,it is possible to solve the problems in terms of calculation in amplifying circuits,the key problem being low level of exactness.the research shows the influence of components′ parameters of basic amplifying circuits and feedback circuits on feedback amplifying circuits.the results of the research may contribute to design amplifying circuits and electronic instrument with higher performance,due to the simpler calculation in the design of feedback circuit with cascade voltage.

摘 要：在建立电压串联反馈电路模型基础上，推导出放大电路中的电压放大倍数、输入电阻、输出电阻的精确计算公式。提出新的计算方法，从而解决了放大电路计算不方便，精确度不高、准确性不够的问题。同时进一步揭示了基本放大电路、反馈电路元件参数对反馈放大电路的影响关系。为设计出高性能放大电路及电子设备指明了方向，更加方便于电压串联反馈电路的计算。

The relation between quiescent point and voltage gain,input resistance,output resistance, maximum nondistortion output voltage ,dynamics parameter in amplifier is discussed by commom-emitter fixed-bias amplifier,the effective methods to improve voltage gain are deduced,and how to set reasonale quiescent point′s position based on amplifier′ different is also presented finally.

以共射固定偏置放大电路为例讨论放大电路中静态工作点与电压放大倍数、输入电阻、输出电阻、最大不失真输出电压等动态参数的关系，得出提高电压放大倍数的有效方法。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷