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A use for a short-circuit: railway signalling

 

作者: ChrisButlin,  

 

期刊: Electronics Education  (IET Available online 1997)
卷期: Volume 1997, issue 2  

页码: 31-32

 

年代: 1997

 

DOI:10.1049/ee.1997.0047

 

出版商: IEE

 

数据来源: IET

 

摘要:

Short-circuits are not useful to engineers and are to be avoided—aren't they? Did you know that short circuits are essential to the running of our trains?

 

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