Chapter Overview

Asingle stage of amplification is often not enough. This chapter covers multistage amplifiers and the methods used to transfer signals from one stage to the next. It also covers field-effect transistor amplifiers. The FET has certain advantages that make it attractive for some amplifier applications. This chapter also discusses negative feedback and frequency response.

This chapter will help you to:

1. Identify the standard methods of signal coupling and list their characteristics.

2. Calculate the input impedance of common-emitter amplifiers.

3. Find voltage gain in cascade amplifiers.

4. Draw a signal load line for a common-emitter amplifier.

5. Solve FET amplifier circuits.

6. Identify negative feedback and list its effects.

7. Determine the frequency response of a common-emitter amplifier.

Study Outline

7-1 Amplifier Coupling

7-2 Voltage Gain in Coupled Stages

7-3 Field-Effect Transistor (FET) Amplifiers

7-4 Negative Feedback

7-5 Frequency Response