Chapter 04
Field-Effect Transistors
FET
1
INTRODUCTION
2
CONSTRUCTION AND CHARACTERISTICS
OF JFETs
hoặc có
dấucóOdấu O
hoặc
3
VGS = 0 V, VDS Some Positive Value
4
VGS = 0 V, VDS Some Positive Value
5
VGS < 0 V
6
p-Channel Devices
7
TRANSFER CHARACTERISTICS
BJT
JFET
8
Applying Shockley’s Equation
9
IMPORTANT RELATIONSHIPS
10
MOSFET
11
MOSFET
12
I-V CHARACTERISTICS
13
I-V CHARACTERISTICS
14
IMPORTANT EQUATIONS
15
FET BIASING
16
FET BIASING
17
JFET Amplifiers
• Transconductance
18
JFET AC Equivalent Circuit
19
FET configurations
20
FET configurations
21
FET configurations
22
FET configurations
23
Problems
1. Determine: VGS, ID, VDS , gm ,…
24
Problems
2. Determine: VGS, ID, VDS , gm ,…
25
Problems
3. Determine: VGS, ID, VDS , gm ,…
26
Problems
3. Determine: VGS, ID, VDS , gm ,…
27
Problems
3. Determine: VGS, ID, VDS , gm ,…
28
THANK YOU!
29