NEETS Module 8, Introduction to Amplifiers

216 Pages·2013·3.98 MB·English

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NONRESIDENT

TRAINING

COURSE

February 2013

Navy Electricity and

Electronics Training

Series

Module 8-Amplifiers

NAVEDTRA 14180A

S/N 0504LP1132235

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PREFACE

By enrolling in this self-study course, you have demonstrated a desire to improve
yourself and the Navy. Remember, however, this self-study course is only one part of the
total Navy training program. Practical experience, schools, selected reading, and your
desire to succeed are also necessary to successfully round out a fully meaningful training
program.

THE COURSE: This self-study course is organized into subject matter areas, each
containing learning objectives to help you determine what you should learn along with
text and illustrations to help you understand the information. The subject matter reflects
day-to-day requirements and experiences of personnel in the rating or skill area. It also
reflects guidance provided by Enlisted Community Managers (ECMs) and other senior
personnel, technical references, instructions, etc., and either the occupational or naval
standards, which are listed in the Manual of Navy Enlisted Manpower Personnel
Classifications and Occupational Standards, NAVPERS 18068.

THE QUESTIONS: The questions that appear in this course are designed to help you
understand the material in the text.

VALUE: In completing this course, you will improve your military and professional
knowledge. Importantly, it can also help you study for the Navy-wide advancement in
rate examination. If you are studying and discover a reference in the text to another
publication for further information, look it up.

2013 Edition

Published by
Center for Surface Combat Systems (CSCS)

NAVSUP Logistics Tracking Number
0504-LP-113-2235

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TABLE OF CONTENTS

CHAPTER PAGE
1 Amplifiers….…..……….................................................................. 1-1
2 Video and RF Amplifiers……......................................................... 2-1
3 Special Amplifiers……………….................................................... 3-1

APPENDIX
A Glossary......................................................................................... A-1

Course Assignments follow Appendix A
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NAVY ELECTRICITY AND ELECTRONICS TRAINING
SERIES

The Navy Electricity and Electronics Training Series (NEETS) was developed for use by
personnel in many electrical and electronic-related Navy ratings. Written by, and with the
advice of, senior technicians in these ratings, this series provides beginners with
fundamental electrical and electronic concepts through self-study. The presentation of
this series is not oriented to any specific rating structure, but is divided into modules
containing related information organized into traditional paths of instruction.

The series is designed to give small amounts of information that can be easily digested
before advancing further into the more complex material. For a student just becoming
acquainted with electricity or electronics, it is highly recommended that the modules be
studied in their suggested sequence.

Considerable emphasis has been placed on illustrations to provide a maximum amount of
information. In some instances, knowledge of basic algebra may be required.

Course descriptions and ordering information may be found at https://www.netc.navy.mil
then click on the Programs tab, then select the Nonresident Training Courses from the
list.

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equipment you will be working on, you will find the below notations at the end of some
paragraphs. The notations are used to emphasize that safety hazards exist and care must
be taken or observed.

WARNING

AN OPERATING PROCEDURE, PRACTICE, OR CONDITION, ETC., WHICH MAY
RESULT IN INJURY OR DEATH IF NOT CAREFULLY OBSERVED OR
FOLLOWED.

CAUTION

AN OPERATING PROCEDURE, PRACTICE, OR CONDITION, ETC., WHICH MAY
RESULT IN DAMAGE TO EQUIPMENT IF NOT CAREFULLY OBSERVED OR
FOLLOWED.

NOTE

An operating procedure, practice, or condition, etc., which is essential to emphasize.
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Course Title: NEETS Module 8-Amplifiers

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NEETS MODULE 8-Amplifiers
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1 AMPLIFIERS
LEARNING OBJECTIVES
After you finish this chapter, you should be able to do the following:
1. Define amplification and list several common uses; state two ways in which
amplifiers are classified.
2. List the four classes of operation of, four methods of coupling for, and the
impedance characteristics of the three configurations of a transistor amplifier.
3. Define feedback and list the two types of feedback.
4. Describe and state one use for a phase splitter.
5. State a common use for and one advantage of a push-pull amplifier.

1.1 INTRODUCTION
This chapter is a milestone in your study of electronics. Previous modules have been
concerned more with individual components of circuits than with the complete circuits as
the subject. This chapter and the other chapters of this module are concerned with the
circuitry of amplifiers. While components are discussed, the discussion of the
components is not an explanation of the working of the component itself (these have been
covered in previous modules) but an explanation of the component as it relates to the
circuit.

The circuits this chapter is concerned with are AMPLIFIERS. Amplifiers are devices that
provide AMPLIFICATION. That doesn't explain much, but it does describe an amplifier
if you know what amplification is and what it is used for.

1.2 WHAT IS AMPLIFICATION?
Just as an amplifier is a device that provides amplification, amplification is the process of
providing an increase in AMPLITUDE. Amplitude is a term that describes the size of a
signal. In terms of a.c. amplitude usually refers to the amount of voltage or current. A 5-
volt peak-to-peak a.c. signal would be larger in amplitude than a 4-volt peak-to-peak a.c.
signal. "SIGNAL" is a general term used to refer to any a.c. or d.c. of interest in a circuit;
e.g., input signal and output signal. A signal can be large or small, ac. or d.c., a sine wave
or nonsinusoidal, or even nonelectrical such as sound or light. "Signal" is a very general
term and, therefore, not very descriptive by itself, but it does sound more technical than
the word "thing". It is not very impressive to refer to the "input thing" or the "thing that
comes out of this circuit."

1-1
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