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Quells sont les roles d'un transistor bipolaire?

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Question added by Khalil Jemni
Date Posted: 2014/01/31
mohammed Al fawaz
by mohammed Al fawaz , Electronics Engineer , Electronics Systems Engineer

Please rewrite this question in english so that everyone here can understand ore details on transistor are found in halkias and millman 

عثمان بلعباسي
by عثمان بلعباسي , Ingenieur Observer 2D , Entreprise national de géophysique (E.NA.GEO)

principe de fonctionnement est basé sur deux jonctions PN, l'une en direct et l'autre en inverse. La polarisation de la jonction PN inverse par un faible courant électrique (parfois appelé effet transistor) permet de « commander » un courant beaucoup plus important, suivant le principe de l'amplification de courant.

? What are the roles of a bipolar transistor

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