{"title":"The impact of ISDN on Japan's telecommunications power system","authors":"T. Sugiura, T. Ogata, T. Koyashiri","doi":"10.1109/INTLEC.1988.22319","DOIUrl":null,"url":null,"abstract":"The authors describe the state of ISDN (integrated services digital network) services in Japan and discuss issues concerning power supply systems suitable for the ISDN age. A distributed power supply system has been developed to solve the problems posed by centralized systems in telephone offices when ISDN systems are adopted. A compact, thin board-mounted DC-DC converter for a digital switch system has been developed. In addition, a small-size constant-current DC-DC converter has been developed for the metallic subscriber-loop system. A small-capacity uninterruptible power unit with back-up batteries, for use on subscriber's premises, has been developed for the optical-fiber subscriber loop systems. An extremely lightweight, high-voltage DC-DC converter for a communications satellite has also been developed.<<ETX>>","PeriodicalId":169486,"journal":{"name":"10th International Telecommunications Energy Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1988-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"10th International Telecommunications Energy Conference","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/INTLEC.1988.22319","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
The authors describe the state of ISDN (integrated services digital network) services in Japan and discuss issues concerning power supply systems suitable for the ISDN age. A distributed power supply system has been developed to solve the problems posed by centralized systems in telephone offices when ISDN systems are adopted. A compact, thin board-mounted DC-DC converter for a digital switch system has been developed. In addition, a small-size constant-current DC-DC converter has been developed for the metallic subscriber-loop system. A small-capacity uninterruptible power unit with back-up batteries, for use on subscriber's premises, has been developed for the optical-fiber subscriber loop systems. An extremely lightweight, high-voltage DC-DC converter for a communications satellite has also been developed.<>
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