Chapter 29: Amplifier Applications
MULTIPLE CHOICE
1. ____ amplifiers are used for high gain at low frequencies or for amplification of a direct-current signal.
a.
Operational
c.
Direct-coupled
b.
Audio
d.
RF
2. Applications of the ____ amplifier include computers, measuring and test instruments, and industrial
control equipment.
a.
DC
c.
Operational
b.
Audio
d.
RF
3. The ____ amplifier is used in applications where both high gain and temperature stability are required.
a.
multiple-stage
c.
complementary
b.
differential
d.
darlington
4. The ____ amplifier is unique in that it has two separate inputs and can provide either one or two
outputs.
a.
darlington
c.
complementary
b.
multiple-stage
d.
differential
5. ____ amplifiers amplify AC signals in the frequency range of approximately 20 to 20,000 hertz.
a.
Audio
c.
RF
b.
DC
d.
IF
6. Two or more voltage amplifiers can be connected together to provide higher amplification. The stages
may be RC coupled or ____.
a.
direct coupled
c.
impedance coupled
b.
transformer coupled
d.
capacitance coupled
7. ____ amplifiers are designed to drive specific loads and are rated in watts.
a.
Audio
c.
Power
b.
Voltage
d.
Video
8. The most common use of ____ amplifiers is in television receivers and computer monitors.
a.
IF
c.
RF
b.
audio
d.
video
9. ____ amplifiers are very high-gain amplifiers used to amplify both AC and DC signals.
a.
Operational
c.
IF
b.
RF
d.
Video
10. ____ amplifiers, an application of the op-amp, are used when mixing audio signals together.
a.
Inverting
c.
Non-inverting
b.
Summing
d.
Difference
COMPLETION
1. ____________________ is the ability of an electronic circuit to increase the amplitude of an electronic
signal.
2. Audio amplifiers are divided into two categories: ____________________ amplifiers and power
amplifiers.
3. ____________________ is the condition when a device creates too large a load and severely affects
the output by drawing too much current.
SHORT ANSWER
1. Describe the applications of the differential amplifier.
2. Describe RF amplifiers and their two classes.
