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首页> 外文期刊>Measurement techniques >MEASUREMENT OF THE THERMAL IMPEDANCE OF LIGHT-EMITTING DIODES AND LIGHT-EMITTING DIODE MATRICES
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MEASUREMENT OF THE THERMAL IMPEDANCE OF LIGHT-EMITTING DIODES AND LIGHT-EMITTING DIODE MATRICES

机译：发光二极管和发光二极管矩阵的热阻的测量

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摘要

A measuring instrument of the frequency and current dependences of the modulus and phase of the thermal impedance of LEDs and LED matrices of 100 W and higher is described. The principle of operation of the measuring instrument is based on the transmission through LEDs of a sequence of impulses of direct current that is pulse-width modulated under the harmonic law, and the determination of the variable component of the temperature of the p-n junction of the LED as the voltage changes during intervals between current impulses. An algorithm is presented to determine the component of full thermal resistance of an LED or an LED matrix from the results of processing the frequency dependences of the modulus and phase of the thermal impedance. Examples of implementation of the algorithm are given.
机译：描述了一种LED和100 W及更高的LED矩阵的热阻的模数和相位与频率和电流的关系的测量仪器。测量仪器的工作原理基于在谐波条件下通过脉宽调制的一系列直流脉冲序列通过LED的传输以及确定传感器pn结温度的可变分量的方法。当电流脉冲之间的间隔内电压变化时，LED发光。提出了一种算法，该算法从处理热阻抗的模数和相位的频率依赖性的结果确定LED或LED矩阵的全热阻分量。给出了该算法的实现示例。

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  • 来源
    《Measurement techniques》 |2017年第1期|46-51|共6页
  • 作者

    Smirnov V. I.; Sergeev V. A.; Gavrikov A. A.;

  • 作者单位

    Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Ulyanovsk Branch, Ulyanovsk, Russia|Ulyanovsk State Tech Univ, Ulyanovsk, Russia;

    Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Ulyanovsk Branch, Ulyanovsk, Russia|Ulyanovsk State Tech Univ, Ulyanovsk, Russia;

    Russian Acad Sci, Kotelnikov Inst Radio Engn & Elect, Ulyanovsk Branch, Ulyanovsk, Russia;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    LED; LED matrix; thermal impedance; pulse-width modulation; harmonic law;

    机译：LED;LED矩阵;热阻;脉宽调制;谐波律;

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