R. Bergeest, M. Kahmann, M. Klonz, R. Zirpel, P. Miljanic, B. Stojanovic
{"title":"Development of the New PTB Highly Accurate AC Power Source","authors":"R. Bergeest, M. Kahmann, M. Klonz, R. Zirpel, P. Miljanic, B. Stojanovic","doi":"10.1109/CPEM.1988.671336","DOIUrl":null,"url":null,"abstract":"A highly accurate ac power source for unity power factor with an expected total uncertainty of a few parts in 10/sup 6/ to be used in the power frequency range is described. The rms value of the output voltage is continuously readjusted to a precisely known dc reference voltage using a multijunction thermal converter. A reference current is derived from the output voltage using an accurately known reiistor. The output current of a transconductance amplifier is compared to this reference current by means of a current comparator and continuously readjusted.","PeriodicalId":326579,"journal":{"name":"1988 Conference on Precision Electromagnetic Measurements","volume":"8 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"1988 Conference on Precision Electromagnetic Measurements","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/CPEM.1988.671336","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
A highly accurate ac power source for unity power factor with an expected total uncertainty of a few parts in 10/sup 6/ to be used in the power frequency range is described. The rms value of the output voltage is continuously readjusted to a precisely known dc reference voltage using a multijunction thermal converter. A reference current is derived from the output voltage using an accurately known reiistor. The output current of a transconductance amplifier is compared to this reference current by means of a current comparator and continuously readjusted.
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