电流感应精度可达百万分之几在几分之一秒内

2009 IEEE International Conference on Microwaves, Communications, Antennas and Electronics Systems Pub Date : 2009-11-01 DOI:10.1109/COMCAS.2009.5386031

J. Szwarc

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引用次数: 2

摘要

最精确的电流测量是通过电流感应电阻法实现的。对电流变化的响应精度和速度取决于电阻器的热稳定性——它的低温电阻系数和与之相关的功率电阻系数。新的箔电阻器技术(Z箔)将TCR降低到1 ppm/°C以下，特殊的结构减少了热畸变，从而使电流检测器的精度在几分之一秒内达到百万分之几。

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Current sensing with a precision of a few parts per million within a fraction of a second

The most precise measuring of electrical current is achieved by the Current Sensing Resistor method. The precision and speed of response to changing current depend on thermal stability of the resistor — its low Temperature Coefficient of Resistance and a related to it Power Coefficient of Resistance. The new Foil resistor technology (Z foil) reduced the TCR to below 1 ppm/°C and special construction reduced the thermal distortion leading to a current detector with a Precision of a few parts per million within a Fraction of a Second.

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2009 IEEE International Conference on Microwaves, Communications, Antennas and Electronics Systems

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