Chapter 3, Section 5

Question 1

What is the primary purpose of an amplifier?

Answer 1

To increase the strength or amplitude of a signal.

Question 2

For a standard amplifier what are the basic components?

Answer 2

Transistors, resistors, capacitors, and inductors.

Question 3

When a DC voltage is applied to the amplifier without an input voltage, what condition are the junctions in the transistor?

Answer 3

Cutoff or saturation region.

Question 4

At what point in the amplifier is the input signal applied?

Answer 4

At the base of the transistor.

Question 5

What are the different types of transistors that can be used in amplifiers?

Answer 5

Bipolar junction transistors (BJTs) and field-effect transistors (FETs).

Question 6

What are the connection leads of a FET identified in a circuit?

Answer 6

The gate (G), drain (D), and source (S).

Question 7

What is the purpose of the resistor placed on the source voltage in an amplifier?

Answer 7

Stabilizing the biasing and preventing variations in the drain current caused by changes in the FET’s internal resistance.

Question 8

How is the signal of a standard amplifier connected to the output?

Answer 8

Through coupling capacitors or transformers.