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DUAN Xiujuan, JIN Bin, HUANG Yongjing, SHANG Xiaohua, KANG Jian. Automatic Measuring Instrument of Four Thermal Resistance Model Based on High Power LED Lamp Net[J]. Journal of Xihua University(Natural Science Edition), 2017, 36(6): 36-39, 50. DOI: 10.3969/j.issn.1673-159X.2017.06.006
Citation: DUAN Xiujuan, JIN Bin, HUANG Yongjing, SHANG Xiaohua, KANG Jian. Automatic Measuring Instrument of Four Thermal Resistance Model Based on High Power LED Lamp Net[J]. Journal of Xihua University(Natural Science Edition), 2017, 36(6): 36-39, 50. DOI: 10.3969/j.issn.1673-159X.2017.06.006
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Automatic Measuring Instrument of Four Thermal Resistance Model Based on High Power LED Lamp Net

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  • LED junction temperature is an important indicator of its performance and is relevant to its thermal resistance. It impacts on LED life. In this paper, the fourthermal resistance theory of LED is proposed and analyzed by measuring the voltage, current and heat sink temperature of high-power LED lamp net based on the good linear relationship between junction voltage and junction temperature of LED semiconductor device. An automatic measuring instrument was developed for high-power LED light grid thermal resistance. It can perform the automatic testing of the high-power LED light network thermal resistance quickly and accurately.
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