NPN vs. PNP Transistors as Common-Emitter Switches
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Como identificar Transistor NPN, PNP, Base, Coletor e Emissor
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Bipolar Transistor Basics: NPN vs. PNP, Basisstrom & Experimente für die Praxis #1
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Tutorial: How to design a transistor circuit that controls low-power devices
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Small Signal Amplifiers
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How To Use Transistors In YOUR Projects! || Transistors Explained || Transistors As A Switch
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Noções básicas sobre ganho de emissor comum (10 transistores)
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Transístor Explicado - Como funcionam os transístores
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