Chapter 4 BJT2 - Chapter 4 Bipolar Junction Transistor(BJ T...

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SJTU J. Chen 1 3/2/12 Chapter 4 Bipolar Junction Transistor (BJ T)
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3/2/12 2 J. P C h e n Dependence of I c on V CB (b) The ideal iC vCE characteristics (a) Conceptual circuit for measuring the iC vCE characteristics of the BJT
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3/2/12 3 J. P C h e n The Early Effect The iC vCE characteristics of a practical BJT
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3/2/12 4 J. P C h e n The Early Effect + = A CE V v S C V v e I i T BE 1 C A o t cons BE CE C o I V r v v i r - = 1 tan
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3/2/12 5 J. P C h e n Homework: 4.1 ; 4.19; 4.20; 4.24
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SJTU J. Chen 6 3/2/12 Part 2 DC analysis of transistor circuits ; Small Signal Operation and Mo dels
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3/2/12 7 J. P C h e n Large-signal Equivalent Circuit Mod els Analysis Steps Examples Analysis of Transistor Circuit at DC
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3/2/12 8 Equivalent large signal Circuit Model s voltage-controlled current source Controlled current source + B E C 1 T BE B V v s i I e β = ÷ s C T BE B V v i I e i = = B i BE v V T s BE v I e
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3/2/12 9 J. P C h e n Equivalent large signal Circuit Model s current-controlled current source No physical meaning Useful for DC analysis = α C F E i i
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10 J. P
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Chapter 4 BJT2 - Chapter 4 Bipolar Junction Transistor(BJ T...

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