About This Chapter
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.
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.
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.
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.
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.
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.
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.
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.
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Other chapters within the UPSEE Paper 1: Study Guide & Test Prep course
- Basics of Scientific Units & Measurement
- Understanding the Laws of Motion
- Energy, Work & Power in Physics
- Fundamentals of Linear Momentum
- Understanding Rotation of a Rigid Body
- Gravitation in Physics
- Understanding Oscillatory Motion
- Mechanics of Solids & Fluids
- Properties of Heat & Thermodynamics
- Overview of Waves
- Understanding Electrostatics
- Overview of Current Electricity
- Magnetic Effect of Current
- Magnetism in Matter
- Electromagnetic Induction Overview
- Ray Optics & Optical Instruments
- Understanding Wave Optics
- Overview of Modern Physics
- Overview of Nuclear Physics
- Atomic Structure & Configuration
- Properties of Chemical Bonds
- Redox Reactions Overview
- Chemical Equilibrium & Kinetics
- Electrochemistry & Catalysts
- Colloids in Chemistry
- Colligative Properties of Solution
- Periodic Table & Electronic Configuration
- Overview of Thermochemistry
- Reactions & Compounds in Organic Chemistry
- Understanding Isomerism
- Overview of Organic Compounds
- Properties of Solids in Chemistry
- Overview of Algebra Basics
- Matrices in Algebra
- Probability in Math
- Understanding Trigonometry
- Overview of Coordinate Geometry
- Principles of Calculus
- Vectors in Algebra
- Mechanics Overview
- UPSEE Paper 1 Flashcards