{"title":"使用可编程约瑟夫森电压标准和相敏零检测器测量交流电压的不确定度","authors":"D. Georgakopoulos","doi":"10.1109/CPEM.2010.5543436","DOIUrl":null,"url":null,"abstract":"This paper investigates the required characteristics and the systematic errors of a lock-in amplifier (LIA) when it is used as a null detector for the measurement of AC voltage by comparison with a stepwise approximated sinewave (SASW) generated using a programmable Josephson voltage standard. It is shown that the uncertainties introduced by the LIA in the measurement are related to the number of samples per period of the SASW and can be reduced to levels below 0.5 µV/V.","PeriodicalId":222495,"journal":{"name":"CPEM 2010","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2010-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Uncertainties in the measurement of ac voltage using a programmable Josephson voltage standard and a phase sensitive null detector\",\"authors\":\"D. Georgakopoulos\",\"doi\":\"10.1109/CPEM.2010.5543436\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This paper investigates the required characteristics and the systematic errors of a lock-in amplifier (LIA) when it is used as a null detector for the measurement of AC voltage by comparison with a stepwise approximated sinewave (SASW) generated using a programmable Josephson voltage standard. It is shown that the uncertainties introduced by the LIA in the measurement are related to the number of samples per period of the SASW and can be reduced to levels below 0.5 µV/V.\",\"PeriodicalId\":222495,\"journal\":{\"name\":\"CPEM 2010\",\"volume\":\"2013 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2010-06-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"CPEM 2010\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/CPEM.2010.5543436\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"CPEM 2010","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPEM.2010.5543436","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Uncertainties in the measurement of ac voltage using a programmable Josephson voltage standard and a phase sensitive null detector
This paper investigates the required characteristics and the systematic errors of a lock-in amplifier (LIA) when it is used as a null detector for the measurement of AC voltage by comparison with a stepwise approximated sinewave (SASW) generated using a programmable Josephson voltage standard. It is shown that the uncertainties introduced by the LIA in the measurement are related to the number of samples per period of the SASW and can be reduced to levels below 0.5 µV/V.
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