• The meter input resistance should be much higher than the source resistance.

    仪表输入电阻应当远远大于内阻才能满足对测量准确度的要求。

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  • The fundamental limit to measurement is Johnson noise in the source resistance.

    测量基本限制电阻中的约翰逊噪声

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  • The effective source resistance includes the device under test as well as the measurement instrument.

    电阻包括被测设备测量仪器两个方面

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  • As shown in Figure 2-2, the input bias current (IBIAS) develops an error voltage across the source resistance (RS).

    如图2 - 2所示,输入偏置电流(IBIAS)在电阻(RS)上产生了误差电压

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  • For example, if the desired accuracy is 1%, then the meter resistance must be more than 100 times the source resistance.

    例如如果希望的准确度1%,那么表的输入电阻必须的电阻高100

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  • After the bandwidth and temperature, the remaining factor in determining the system noise is the effective source resistance.

    讨论带宽温度以后决定系统噪声一个因素就是等效电阻。

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  • The effective resistance is the parallel combination of the source resistance and the feedback (or shunt) sensing resistance.

    有效电阻电阻反馈(分流)取样电阻并联组合

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  • Table 2-3 summarizes minimum recommended source resistance values for various measurement ranges for a typical feedback ammeter.

    2-3给出了典型的反馈安培计各种测量范围内最小电阻推荐

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  • Johnson noise may be reduced by lowering the temperature of the source resistance and by decreasing the bandwidth of the measurement.

    降低电阻温度减小测量带宽可以降低约翰逊噪声

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  • Noise can seriously affect sensitive current measurements. This section discusses how source resistance and source capacitance affect noise performance.

    噪声能够严重地影响灵敏电流测量工作讨论电阻电容如何影响噪声的性能

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  • The previous equations suggest several means for reducing Johnson noise. It might be possible to reduce the bandwidth, the source temperature, or the source resistance.

    上述公式给出降低约翰逊噪声几种方法,即可以减小带宽、降低温度或者降低源电阻

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  • The source resistance of the DUT will affect the noise performance of a feedback ammeter. As the source resistance is reduced, the noise gain of the ammeter will increase.

    DUT电阻影响反馈安培计噪声性能。源电阻降低,安培计噪声增益增加

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  • Although input bias current is a common source of this type of error, currents generated by external circuits can also result in errors due to voltage drops across the source resistance.

    虽然输入偏置电流这种误差常见来源,但是外电路产生的电流电阻上形成电压引起误差

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  • Cross Talk between parallel Microstrip lines due to Electric Field coupling for different R-C values Compared with weak coupling and zero source resistance assumption in the culprit circuit.

    耦合干扰源为零电源电阻其他情况下平行微带线电场耦合之串音比较

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  • An additional advantage of this connection is that input resistance approaches infinity as the capacitor C1 approaches full charge, eliminating errors due to loading of the source resistance.

    上面这个电路一个优点在于,电容c1充电完毕后,输入电阻将趋于无穷大,因此可以消除因信号源内阻产生的误差

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  • Just a natural source of resistance taken from the very part of Ethiopia where people were suffering from starvation.

    这就是一种天然抗体,恰好取自人们遭受饥饿的埃塞俄比亚那块地方罢了。

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  • In my quest to recruit internal customers for the Rational Application Developer code analysis and inspection tool, I encountered resistance from a surprising source: my own development team.

    寻找分析RationalApplication Developer的代码检查工具内部客户的过程中,遇到来自一个令人惊奇抵抗:我自己的开发团队。

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  • It is the unique source of human assertiveness and aggressiveness as well as the source of resistance to the aggression of others.

    人类魄力进取特殊泉源,但同时也是,抵制他人进犯由来。

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  • Never before have the tools and strategies been in place to attempt to stop the emergence and spread of drug resistance at its source.

    以前从未力图根源制止耐药性出现传播手段战略

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  • Also, with an adjustable voltage source, the voltage dependence of the resistance under test can be obtained directly.

    而且使用电压,还可以直接得到被电阻电压的依赖关系

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  • Any external shunt resistance across the voltage source will attenuate the measured voltage, as shown in Figure 2-3.

    接在电压上的任何外部分流电阻都会使测量的电压衰减,如图2 - 3所示。

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  • If using a separate current source and voltmeter to make low resistance measurements, each instrument must be checked for non-ohmic contacts.

    如果使用分离电流电压表进行电阻测量,则必须检查仪器欧姆接触情况。

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  • High resistance measurements using the constant-current method may be made using either an electrometer voltmeter and current source or just an electrometer ohmmeter.

    采用恒流可以使用静电计电压表电流或者使用静电计欧姆计来测量电阻

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  • Notice that this is a two-wire resistance measurement compared to using the electrometer voltmeter and external current source, which can make a four-wire measurement.

    注意这种测量方法线电阻测量,使用静电计电压表外部电流可以进行线测量。

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  • When switching a voltage source to multiple devices, it may become necessary to compensate for voltage drops due to switch resistance.

    一个电压切换至多装置时,可能必须补偿由于开关电阻引起的

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  • This paper introduces a new solution of equivalent resistance of one port net containing controlled source.

    介绍受控单口网络等效电阻一种求法

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  • Cable leakage resistance is a common source of shunt resistance loading, as shown in Figure 2-4.

    分流电阻负载通常电缆泄漏电阻引起如图2 - 4所示。

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  • Some electrometers and picoammeters, however, have a built-in voltage source and are capable of measuring the resistance directly.

    然而有的静电计皮安计内部装有电压能够直接测量电阻

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  • Some electrometers and picoammeters, however, have a built-in voltage source and are capable of measuring the resistance directly.

    然而有的静电计皮安计内部装有电压能够直接测量电阻

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