LED电容的测量  

The Capacitance Measurement of LED

作　　者：吕正[1] 徐英莹[1] 阮永顺[1] 

机构地区：[1]中国计量科学研究院,北京100013

出　　处：《中国照明电器》2010年第1期6-9,共4页China Light & Lighting

摘　　要：LED的电容测量分为工作状态时(亮态)和非工作状态时(暗态)。本文叙述了LED暗态电容的测量原理和方法,选择了3只具有代表性的LED进行测量,测出其暗态电容,找出了较理想的测量频率范围,并对测量结果进行了分析。本文还重点剖析了LED亮态时不能进行电容测量的原因。Operating state and non-operating state are distinguished in the capacitance measurement of LED. This paper introduces the measuring principle and method. We select three kinds of LEDs to measure, and their capacitance in non-operating state are gained. We found an ideal range of measuring frequency, and analyzes for measuring datum. Finally, this paper explains the reason that non-measuring capacitance is important when LED is in non-operating state.

关 键 词：LED 电容 亮态 暗态 

分 类 号：TN312.8[电子电信—物理电子学] TM934.2[电气工程—电力电子与电力传动]