Comment savoir si un transistor est NPN ou PNP ? - Quora
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Electricite industrielle - La différence entre un transistor NPN et PNP ===>Bouchenine | Facebook
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Differences between NPN & PNP Transistors and their Making
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Principes de base des transistors | DigiKey
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What is the Difference between NPN and PNP Transistor?
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How to Switch between an NPN and PNP transistor in a circuit - Electronics for Absolute Beginners - YouTube
Les transistors PNP - Traité d'électricité et d'électronique pour le radioamateur - F6CRP
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Transistors - SparkFun Learn
