基于虚拟仪器的功率三极管热阻测试系统  

The Test System For Thermal Resistance Of Power Transistor base on Virtual Instrument

作　　者：李杰明[1] 谭煌[1] 刘汉华[1] 郑学仁[1] 

机构地区：[1]华南理工大学电子与信息学院,广东广州510641

出　　处：《微计算机信息》2009年第8期297-298,281,共3页Control & Automation

摘　　要：本文根据国家标准中关于电学参数法测功率三极管热阻的原理,在虚拟仪器技术平台上,设计了一套简单实用的功率三极管热阻测试系统。论述了热阻测试系统的软硬件设计原理和系统构成。对典型功率三极管进行测试,得到合理的测试结果,表明系统有操作方便,重复性好的特点,可用于生产线功率器件热特性分析。This paper design a handy and practical measurement system for the thermal resistance of power transistor.It is constructed by virtual instrument.This system is base on electrical parameter method,which is mentioned in National Standards of the People＇s Republic of China. Further, the design of software and hardware of this system is introduced. Final, this paper present the test result of some typical power transistor.The result indicate the system is reliable and convenient,it can be applied to thermal resistance analysis of power transistor in product line.

关 键 词：虚拟仪器 热阻 功率三极管 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置] TN321[自动化与计算机技术—控制科学与工程]