LESSON 3
RADIO SET COMPONENTS
SCOPE ....................................Printed circuits; operational amplifiers;
construction and application of IC's;
switches; connectors, jacks, and plugs.
CREDIT HOURS .............................1
TEXT ASSIGNMENT ..........................Attached Memorandum, para 3-1 thru 3-5
MATERIALS REQUIRED .......................None
SUGGESTIONS ..............................None
LESSON OBJECTIVES
When you have completed this lesson, you should:
1.
Know how printed circuits are made.
2.
Know the characteristics of the operational amplifier.
3.
Know the three types of IC.
4.
Know the applications of IC's.
5.
Know the symbols and uses of various common switches.
6.
Be able to identify the symbols of various connectors, jacks, and plugs.
ATTACHED MEMORANDUM
3-1.
PRINTED CIRCUITS
Printed circuit boards, such as those shown in figure 3-1, are assemblies of
small-sized components and their associated wiring mounted on a nonconducting
board. Because of its compactness and light weight, the printed circuit is used in
all types of electronic equipment, from pocket radios to computers and radar
systems.
a. Mounting Board.
Mounting boards vary in length, width, and thickness.
All mounting boards are made of nonconducting materials, such as:
(1) Paper laminations impregnated with phenolic resin.
(2) Fiber glass--glass cloth impregnated with epoxy resin.
309 L3
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