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ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Chapter.

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Presentation on theme: "ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Chapter."— Presentation transcript:

1 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Chapter 13 Bipolar Junction Transistors 1. Understand bipolar junction transistor operation in amplifier circuits. 2. Analyze simple amplifiers using the load- line technique and understand the causes of nonlinear distortion.

2 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors 3. Use large-signal equivalent circuits to analyze BJT circuits. 4. Analyze bias circuits. 5. Use small-signal equivalent circuits to analyze BJT amplifiers. 6. Compute performance of several important amplifier configurations. 7. Select an amplifier configuration appropriate for a given application.

3 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

4 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

5 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Equations of Operation

6 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

7 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

8 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors COMMON-EMITTER CHARACTERISTICS

9 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

10 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Common-emitter Input Characteristic

11 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Common-emitter Output Characteristics

12 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

13 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

14 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

15 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors LOAD-LINE ANALYSIS OF A COMMON-EMITTER AMPLIFIER (Input Circuit)

16 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors LOAD-LINE ANALYSIS OF A COMMON-EMITTER AMPLIFIER (Output Circuit)

17 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

18 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

19 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

20 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

21 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors When i C becomes zero, we say that the transistor is cutoff. When v CE 0.2 V, we say that the transistor is in saturation.

22 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors PNP BIPOLAR JUNCTION TRANSISTORS Except for reversal of current directions and voltage polarities, the pnp BJT is almost identical to the npn BJT.

23 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

24 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

25 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

26 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

27 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

28 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors LARGE-SIGNAL DC CIRCUIT MODELS (Active-Region Model)

29 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors LARGE-SIGNAL DC CIRCUIT MODELS (Saturation-Region Model)

30 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors LARGE-SIGNAL DC CIRCUIT MODELS (Cutoff-Region Model)

31 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Analysis of the Fixed Base Bias Circuit

32 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

33 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

34 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

35 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

36 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

37 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

38 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

39 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

40 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Analysis of the Four-Resistor Bias Circuit

41 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

42 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

43 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

44 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors i b (t) denotes the signal current flowing into the base, I BQ is the dc current that flows when the signal is absent, and i B (t) is the total base current. Similar notation is used for the other currents and voltages.

45 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

46 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

47 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Small-Signal Equivalent Circuit for the BJT

48 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

49 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors COMMON-EMITTER AMPLIFIERS

50 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

51 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

52 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

53 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

54 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

55 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

56 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors The common-emitter amplifier is inverting and has large voltage gain magnitude, large current gain, and large power gain.

57 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors EMITTER FOLLOWERS

58 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

59 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

60 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

61 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Output Impedance

62 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors

63 ELECTRICA L ENGINEERING Principles and Applications SECOND EDITION ALLAN R. HAMBLEY ©2002 Prentice-Hall, Inc. Chapter 13 Bipolar Junction Transistors Even though the voltage gain of the emitter follower is less than unity, the current gain and power gain can be large.

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