{"title":"高温超导体测量的仪器技术","authors":"Y.S. Guo","doi":"10.1109/AUTEST.1994.381543","DOIUrl":null,"url":null,"abstract":"Methods of measuring the critical temperature T/sub c/, and the critical current I/sub c/ for high-temperature superconductors are described. The critical temperature T/sub c/ is that at which a normal superconducting transition occurs and is an important parameter in the evaluation of high-temperature superconductors. A four-point resistance measurement is normally used but when the resistance approaches zero, noise and interference dominate the signal. This paper describer how to reduce the noise and interference and extract a signal from the noise. In addition, a new method is described for performing automatic I/sub c/ measurements with an oscilloscope or a voltmeter.<<ETX>>","PeriodicalId":308840,"journal":{"name":"Proceedings of AUTOTESTCON '94","volume":"1 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1994-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Instrumentation techniques for high-temperature superconductor measurement\",\"authors\":\"Y.S. Guo\",\"doi\":\"10.1109/AUTEST.1994.381543\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Methods of measuring the critical temperature T/sub c/, and the critical current I/sub c/ for high-temperature superconductors are described. The critical temperature T/sub c/ is that at which a normal superconducting transition occurs and is an important parameter in the evaluation of high-temperature superconductors. A four-point resistance measurement is normally used but when the resistance approaches zero, noise and interference dominate the signal. This paper describer how to reduce the noise and interference and extract a signal from the noise. In addition, a new method is described for performing automatic I/sub c/ measurements with an oscilloscope or a voltmeter.<<ETX>>\",\"PeriodicalId\":308840,\"journal\":{\"name\":\"Proceedings of AUTOTESTCON '94\",\"volume\":\"1 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-09-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Proceedings of AUTOTESTCON '94\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/AUTEST.1994.381543\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Proceedings of AUTOTESTCON '94","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/AUTEST.1994.381543","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Instrumentation techniques for high-temperature superconductor measurement
Methods of measuring the critical temperature T/sub c/, and the critical current I/sub c/ for high-temperature superconductors are described. The critical temperature T/sub c/ is that at which a normal superconducting transition occurs and is an important parameter in the evaluation of high-temperature superconductors. A four-point resistance measurement is normally used but when the resistance approaches zero, noise and interference dominate the signal. This paper describer how to reduce the noise and interference and extract a signal from the noise. In addition, a new method is described for performing automatic I/sub c/ measurements with an oscilloscope or a voltmeter.<>
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