b. Jacks and Plugs.
A Jack and plug are special types of female and male
connectors used to connect two circuits. The symbols for several types of jack and
plug connectors are shown in F through I of figure 3-14.
LESSON EXERCISES
In each of the following exercises, select the ONE answer that BEST completes
the statement or answers the question.
Indicate your solution by circling the
letter opposite the correct answer in the subcourse booklet.
1. The one thing in common among all boards on which printed circuits are
formed is that they are
a.
encapsulated.
b.
silver plated.
c.
the same size.
d.
made of nonconducting material.
2.
In the etched-foil method of producing a printed circuit, an acid bath is
used to
a.
remove all the copper foil except the circuit pattern.
b.
set the bond between the copper and the board.
c.
etch the circuit pattern into the copper.
d.
remove the excess epoxy resin.
3. In addition to a gain that decreases with an increasing frequency, the
characteristics of operational amplifiers include a
a.
low dc gain and a low input impedance.
b.
low dc gain and a high input impedance.
c.
high dc gain and a low input impedance.
d.
high dc gain and a high input impedance.
4. When a monolithic IC is created, a PN junction is formed during the
process known as
a.
diffusion.
c.
photomasking.
b.
oxidation.
D.
epitaxial growth.
309 L3
52
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