Practice Test 323

9
Amplifiers: Specifications and
External Characteristics 325
9.1 Basic Amplifier Concepts 326
9.2 Cascaded Amplifiers 330
9.3 Power Supplies and Efficiency 332
9.4 Additional Amplifier Models 335
9.5 Importance of Amplifier Impedances
in Various Applications 338
9.6 Ideal Amplifiers 340
9.7 Frequency Response 342
9.8 Linear Waveform Distortion 345
9.9 Pulse Response 349
9.10 Transfer Characteristic and
Nonlinear Distortion 351
9.11 Differential Amplifiers 354
9.12 Offset Voltage, Bias Current, and
Offset Current 357
Summary 361
Problems 362
Practice Test 371

10
Field-Effect Transistors 372
10.1 NMOS and PMOS Transistors 373
10.2 Load-Line Analysis of a Simple
NMOS Amplifier 379
10.3 Bias Circuits 382
10.4 Small-Signal Equivalent Circuits 385
10.5 Common-Source Amplifiers 389
10.6 Source Followers 392
10.7 CMOS Logic Gates 396
Summary 401
Problems 401
Practice Test 407

11
Bipolar Junction Transistors 408
11.1 Current and Voltage Relationships 409
11.2 Common-Emitter Characteristics 411
11.3 Load-Line Analysis of a Common-Emitter Amplifier 413
11.4 pnp Bipolar Junction Transistors 418
11.5 Large-Signal DC Circuit Models 420
11.6 Large-Signal DC Analysis of BJT Circuits 422
11.7 Small-Signal Equivalent Circuits 428
11.8 Common-Emitter Amplifiers 431
11.9 Emitter Followers 436
Summary 440
Problems 441
Practice Test 447

12
Operational Amplifiers 449
12.1 Ideal Operational Amplifiers 450
12.2 Inverting Amplifiers 451
12.3 Noninverting Amplifiers 457
12.4 Nonlinear Limitations 460
12.5 Differential and Instrumentation Amplifiers 464
12.6 Integrators and Differentiators 466
12.7 Active Filters 468
Summary 472
Problems 473
Practice Test 479


13
Magnetic Circuits and Transformers 481
13.1 Magnetic Fields 482
13.2 Magnetic Circuits 489
13.3 Inductance and Mutual Inductance 494
13.4 Magnetic Materials 498
13.5 Ideal Transformers 500
13.6 Real Transformers 507
Summary 511
Problems 511
Practice Test 519

14
AC Machines 520
14.1 Three-Phase Induction Motors 521
14.2 Equivalent-Circuit and Performance Calculations for Induction Motors 528
14.3 Synchronous Machines 536
14.4 Single-Phase Motors 546
14.5 Stepper Motors and Brushless DC Motors 549
Summary 550
Problems 551
Practice Test 556

APPENDICES
A
Complex Numbers 557
Summary 563
Problems 563

B
Nominal Values and the
Color Code for Resistors 565

C
The Fundamentals
of Engineering Examination 567

D
Answers for the Practice Tests 568

国外电子与通信教材系列电工学原理与应用(第7版)(英文版)/(美)ALLAN R. HAMBLEY 作者简介

熊兰，重庆大学电气工程学院教授。2004年获得高电压与绝缘技术工学博士学位，2010年被聘为教授。自2004年以来，担任电工理论与新技术系副主任，分管教学管理工作。

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