ECE 320 Lab 4 - UL - Experiment#4 MOSFET Common Source...

Experiment #4
MOSFET Common Source Amplifier
Executive Summary:
The MOSFET is a voltage controlled current source. It controls the amount of current
flow through the Drain-Source by creating fields between the drain and source. The field works
as a connection between the drain and source. In this experiment, we used MOSFET’s common -
source configuration to create a voltage amplifier. The gain that we calculated for this
configuration was about 13.13. The Input impedance was high: about 21.5K Ω . The output
impedance was relatively low: about 829 Ω . The gain was inverted which was yielded through
the hybrid-pi model. The gain was relatively low compared to the BJT.
Objective:
To experiment on design, analysis, construction and testing of a MOS field effect
transistor common source amplifier.
Diagrams:
Figure 1
Data:
R_L 1K
R1
360k
R2
160k
Rs 200
Rd
910
C3
100u
C1
100u
0
10Vdc
0
R_S
20k
0
C2
100u
V9
.5Vac
0Vdc
M1
BSP110/PLP
V
V

Measured Value Measured Gain Calculated Val. |%ERROR|
No Load
V
IN
(V) 0.11 Av = 13.13
(Inverted)
11.4 15.18
V
OUT
(V) 2.625
Loaded
V
IN
(V) 0.11