{"title":"在电子产品出现之前的放大器——放大镜","authors":"J. Moyle","doi":"10.1109/HISTELCON.2008.4668729","DOIUrl":null,"url":null,"abstract":"Amazing ingenuity was shown by dasiaelectricianspsila prior to the development of the thermionic valve (tube) into a reliable means of amplification of extremely low current signals in the earliest telecommunication systems. This paper classifies the devices used and then describes the principles involved in the group known as magnifiers. Super-sensitive galvanometers preceded signal amplification; the mirror galvanometer and the siphon recorder are therefore also described.","PeriodicalId":138843,"journal":{"name":"2008 IEEE History of Telecommunications Conference","volume":"68 21 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2008-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Amplifiers before electronics — the Magnifiers\",\"authors\":\"J. Moyle\",\"doi\":\"10.1109/HISTELCON.2008.4668729\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Amazing ingenuity was shown by dasiaelectricianspsila prior to the development of the thermionic valve (tube) into a reliable means of amplification of extremely low current signals in the earliest telecommunication systems. This paper classifies the devices used and then describes the principles involved in the group known as magnifiers. Super-sensitive galvanometers preceded signal amplification; the mirror galvanometer and the siphon recorder are therefore also described.\",\"PeriodicalId\":138843,\"journal\":{\"name\":\"2008 IEEE History of Telecommunications Conference\",\"volume\":\"68 21 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2008-11-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2008 IEEE History of Telecommunications Conference\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/HISTELCON.2008.4668729\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2008 IEEE History of Telecommunications Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/HISTELCON.2008.4668729","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Amazing ingenuity was shown by dasiaelectricianspsila prior to the development of the thermionic valve (tube) into a reliable means of amplification of extremely low current signals in the earliest telecommunication systems. This paper classifies the devices used and then describes the principles involved in the group known as magnifiers. Super-sensitive galvanometers preceded signal amplification; the mirror galvanometer and the siphon recorder are therefore also described.
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