CAJ | 학술논문

为解决发光二极管（LED）的亮度随其温度而变化的问题，设计并实验实现了一种提高其发光温度稳定性的简单方法。将一个热敏电阻与一个普通电阻并联，再将它们与LED串联，当环境温度变化时，热敏电阻的阻值随之改变，由此引起的电路中电流的变化可以补偿LED光输出随温度的变化。本实验设计不但实现了一种利用热敏电阻减小LED亮度随温度变化的一种简单方法，同时学习了通过实验数据确定热敏电阻温度系数的方法，以及将热敏电阻与温度的非线性关系通过并联电路将其线性化的方法。
위해결발광이겁관（LED）적량도수기온도이변화적문제，설계병실험실현료일충제고기발광온도은정성적간단방법。장일개열민전조여일개보통전조병련，재장타문여LED천련，당배경온도변화시，열민전조적조치수지개변，유차인기적전로중전류적변화가이보상LED광수출수온도적변화。본실험설계불단실현료일충이용열민전조감소LED량도수온도변화적일충간단방법，동시학습료통과실험수거학정열민전조온도계수적방법，이급장열민전조여온도적비선성관계통과병련전로장기선성화적방법。
To solve the problem of the brightness of the light-emitting diode (LED), with its temperature changes, the design and experimental realization of a simple method to improve its temperature stability of the light emitting. A thermistor with an ordinary resistor in parallel, and then they are with the LED in series, when the ambient temperature changes, the resistance of the thermistor changes, thereby causing a circuit change in current can be compensated in the LED light output with tem- perature changes. The experimental design is not only to achieve a simple way to reduce the LED brightness varies with tem- perature a thermistor; while learning the methods of experimental data to determine the temperature coefficient thermistor, as well as non-linear thermistor temperature sexual relations through the parallel circuit of the linearization method.