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Adaptation of Keithley 2001 multimeter for low resistance measurements

机译:适应Keithley 2001万用表用于低电阻测量

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摘要

Simple method of Keithley 2001 multimeter resistance measurement range extension towards low resistance is presented. Extension was accomplished by test current increase. The test current was increased by one hundred times and resistance measurement resolution was increased from 1 μΩ to 10 nΩ. But this is not hardware limit of this method. Real limit of test current increase and resistance measurement range extension is heating of the object under measurement. The method is cost effective. It needs only a stable current source and a simple switch.
机译:呈现简单的KEITHLEY 2001万用表电阻测量范围延伸延伸到低电阻。通过测试电流增加完成扩展。测试电流增加了一百次,并且电阻测量分辨率从1μΩ增加到10nΩ。但这不是这种方法的硬件限制。测试电流增加的实际限制和电阻测量范围扩展是在测量下加热物体。该方法具有成本效益。它只需要稳定的电流源和简单的开关。

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