| 高温环境中VMOS超声功率开关的性能分析 |
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| 引用本文： | 黄瑞光,屈万里. 高温环境中VMOS超声功率开关的性能分析[J]. 华中科技大学学报(自然科学版), 1994, 0(11) |
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| 作者姓名： | 黄瑞光 屈万里 |
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| 作者单位： | 华中理工大学电子与信息工程系 |
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| 基金项目： | 石油天然气总公司八五科技攻关项目 |
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| 摘 要： | 对采用ＶＭｔＯＳ功率器件构成的超声功率开关的开关性能和温度性能进行了分析，设计了应用于超声测井仪器中的实用功率发射电路，给出了实际电路的高温试验结果。结果表明，ＶＭＯＳ功率器件在高温环境下的多项性能指标均优于双极型功率器件，可靠性也更高，所给出的设计方法可供高温环境功率电路设计参考。
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| 关 键 词： | 超声测井：超声波发射；VMOS功率器件；温度效应分析与热设计 |
A Theoretical and Experimental Study of the VMOS Ultrasonic Power Switch in a High Temperature Environment |
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| Huang RuiguangDept of Electronics,Information Eng.,H,U.S.T,Wuhan ,China., Qu Wanli. A Theoretical and Experimental Study of the VMOS Ultrasonic Power Switch in a High Temperature Environment[J]. JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE, 1994, 0(11) |
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| Authors: | Huang RuiguangDept of Electronics&Information Eng. H U.S.T Wuhan China. Qu Wanli |
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| Affiliation: | Huang RuiguangDept of Electronics&Information Eng.,H,U.S.T,Wuhan 430074,China., Qu Wanli |
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| Abstract: | A high temperature environmcnt is one of the most important factors affecting the be-havior and reliability of the bore logging instrument.A VMOS ultrasonic power switch foruse in logging is described and a fire-circuit to be applied in logging is designed. Experimental results at high temperatures are given,It can be concluded that the VMOS device is bet-ter than the bi-polar one not only in technical performance but also in reliability; |
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| Keywords: | ultrasonic logging ultrasonic firing VMOS power device temperature effect analysis and heat design |
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