Chapter 7
Special Amplifiers
LEARNING OBJECTIVES
Learning objectives serve as a preview of the information you are expected to learn in this chapter.
The comprehensive check-on-learning questions, found at the end of the chapter, are based on the
objectives. Upon completion of this chapter, you will be able to perform the following learning
objectives:
Describe the basic operation of a differential amplifier.
Describe the operation of a differential amplifier under the following
conditions:
Single-input, single-output.
Single-input, differential-output.
Differential-input, differential-output.
List the characteristics of an operational amplifier.
Identify the symbol for an operational amplifier.
Label the blocks on a block diagram of an operational amplifier.
Describe the operation of an operational amplifier with inverting and
noninverting configurations.
Describe the bandwidth of a typical operational amplifier and methods to
modify the bandwidth.
Identify the following applications of operational amplifiers:
Adder.
Subtractor.
State the common usage for a magnetic amplifier.
Describe the basic operation of a magnetic amplifier.
Describe various methods of changing inductance.
Identify the purpose of components in a simple magnetic amplifier.
INTRODUCTION TO SPECIAL AMPLIFIERS
7-1.
So far this TC has covered a great amount of information about amplifiers. You
have learned about amplification and how the different classes of amplifiers affect
amplification. You have also learned about the many factors that must be considered when
working with amplifiers (such as impedance, feedback, frequency response, and coupling).
However, this TC has only "scratched the surface" of the study of amplifiers. There is still
much more to learn about amplifiers.
23 June 2005
TC 9-62
7-1
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