1 / 64

# Chapter 12 Field-Effect Transistors - PowerPoint PPT Presentation

Chapter 12 Field-Effect Transistors. Chapter 12 Field-Effect Transistors. Understand MOSFET operation. 2 . Analyze basic FET amplifiers using the load-line technique. 3 . Analyze bias circuits. 4 . Use small-signal equivalent circuits to analyze FET amplifiers.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Chapter 12 Field-Effect Transistors' - valencia-cruz

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Chapter 12Field-Effect Transistors

Chapter 12Field-Effect Transistors

• Understand MOSFET operation.

• 2. Analyze basic FET amplifiers using the load-line technique.

• 3. Analyze bias circuits.

4. Use small-signal equivalent circuits to analyze

FET amplifiers.

5. Compute the performance parameters of several

FET amplifier configurations.

6. Select a FET amplifier configuration that is

appropriate for a given application.

7. Understand the basic operation of CMOS logic

gates.

Amplifier analysis has two steps:

1. Determine the Q point.

2. Use a small-signal equivalent circuit to determine impedances and gains.

In small-signal midband analysis of FET amplifiers, the coupling capacitors, bypass capacitors, and dc voltage sources are replaced by short circuits. The FET is replaced with its small-signal equivalent circuit. Then, we write circuit equations and derive useful expressions for gains, input impedance, and output impedance.

To find the output resistance of an amplifier, we disconnect the load, replace the signal source by its internal resistance, and then find the resistance looking into the output terminals.

The source follower has voltage gain slightly less than unity, high input impedance, and low output impedance. Current gain and power gain can be larger than unity.