Ch 20: Electronics, Transistors & Signals

About This Chapter

Let us help you boost your knowledge of the use of electronics in physics, specifically regarding signals and transistors. These lessons and quizzes can be used to gauge how well you'd do on an upcoming exam and which topics may need additional review.

Electronics, Transistors & Signals - Chapter Summary

This chapter covers the band theory of solids and how the flow of electricity is controlled with diodes, semiconductors and transistors. You will learn about the differences between a P-N junction diode and a bipolar junction diode, including their functions and properties. The method used to turn a transistor into an oscillator or amplifier will also be discussed.

Our instructors also explain how an arithmetic logic unit (ALU) works and the differences between digital and analog signals. Further lessons include the topics of laser and maser, population inversion and stimulated and spontaneous emission. Once you have completed this chapter, you should be able to:

  • Classify conductors, semiconductors and insulators on the basis of the band theory of solids
  • Understand how semiconductors, diodes and transistors manage electrical current
  • Define both bipolar and P-N junction diodes, their structures and operations
  • Illustrate how a transistor can be used as both an oscillator and an amplifier
  • Explain how an arithmetic logic unit (ALU) works in a computer
  • Differentiate between digital and analog signals
  • Compare maser and laser
  • Contrast stimulated and spontaneous emission

Our mobile-friendly lessons and quizzes are accessible for you to study 24 hours a day, seven days a week. Each lesson is accompanied by a transcript so you can make a copy to review at any time. Use the chapter tests and lesson quizzes to review how well you understand the material. Our instructors are available if you have additional questions about the lesson.

7 Lessons in Chapter 20: Electronics, Transistors & Signals
Test your knowledge with a 30-question chapter practice test
Properties of Transistors, Diodes & Semiconductors

1. Properties of Transistors, Diodes & Semiconductors

When operating with an electronic system, it's important to understand how to control the flow of electricity. In this lesson, we'll look at two semiconductors, transistors and diodes, and see how they help us manage an electrical current.

P-N Junction Diode: Definition & Properties

2. P-N Junction Diode: Definition & Properties

Dive into this lesson to learn about how the p-n junction diode works and how it can be used. You'll also see how they control the direction of the current in a circuit.

Arithmetic Logic Unit (ALU): Definition, Design & Function

3. Arithmetic Logic Unit (ALU): Definition, Design & Function

An arithmetic logic unit (ALU) represents the fundamental building block of the central processing unit of a computer. An ALU is a digital circuit used to perform arithmetic and logic operations.

What are Digital and Analog Signals? - Definition & Explanation

4. What are Digital and Analog Signals? - Definition & Explanation

In this lesson, we will become acquainted with analog and digital signals, the characteristics of each, and how they are used in data transmission. We will also discuss why modulation and demodulation processes are required for sending and receiving data over transmission media.

Laser & Maser: Definition, Differences & Uses

5. Laser & Maser: Definition, Differences & Uses

This lesson will introduce the reader to the world of lasers and masers, define what they are, how they work, how they are different, and their various uses in everyday applications.

Population Inversion in Physics: Definition & Example

6. Population Inversion in Physics: Definition & Example

In this lesson we will lean about the fundamentals of population inversion. This will include defining the term coherent as it relates to light and discussing an application of population inversion, lasers.

Spontaneous & Stimulated Emission

7. Spontaneous & Stimulated Emission

In this lesson we explore the fundamentals of spontaneous emission and stimulated emission. We will learn to differentiate between these two topics and explore examples of each.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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