{"title":"用于测量小电流的直接耦合放大器","authors":"B.R.F. Kendall","doi":"10.1016/0369-643X(58)90094-X","DOIUrl":null,"url":null,"abstract":"<div><p>Methods for the reduction of grid current noise and leakage currents in direct-coupled preamplifier circuits are discussed. It is shown that, by combining a cathode follower pream-plifier with a negative feedback output circuit, input grid resistors of very high value can be used. The construction and performance of an amplifier using these principles is described. Features of this circuit are a high zero stability and an adjustable time constant.</p></div>","PeriodicalId":100970,"journal":{"name":"Nuclear Instruments","volume":"3 2","pages":"Pages 73-79"},"PeriodicalIF":0.0000,"publicationDate":"1958-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0369-643X(58)90094-X","citationCount":"1","resultStr":"{\"title\":\"Direct-coupled amplifier for the measurement of small currents\",\"authors\":\"B.R.F. Kendall\",\"doi\":\"10.1016/0369-643X(58)90094-X\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Methods for the reduction of grid current noise and leakage currents in direct-coupled preamplifier circuits are discussed. It is shown that, by combining a cathode follower pream-plifier with a negative feedback output circuit, input grid resistors of very high value can be used. The construction and performance of an amplifier using these principles is described. Features of this circuit are a high zero stability and an adjustable time constant.</p></div>\",\"PeriodicalId\":100970,\"journal\":{\"name\":\"Nuclear Instruments\",\"volume\":\"3 2\",\"pages\":\"Pages 73-79\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1958-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/0369-643X(58)90094-X\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Instruments\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/0369643X5890094X\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/0369643X5890094X","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Direct-coupled amplifier for the measurement of small currents
Methods for the reduction of grid current noise and leakage currents in direct-coupled preamplifier circuits are discussed. It is shown that, by combining a cathode follower pream-plifier with a negative feedback output circuit, input grid resistors of very high value can be used. The construction and performance of an amplifier using these principles is described. Features of this circuit are a high zero stability and an adjustable time constant.
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