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Using Pspice to construct the circuit and then write a word report about the task with the screenshot of you stimulation
lab_6_circuits.docx

lab_7___circuit.docx

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Lab #6
Construct the circuit and plot the input and output waveform graphs and calculate the gain
CIRCUIT#1
Components:
Resistors:
• = 99.97 Ω
• = 19.98 Ω
• = 5.07 Ω + 2.67 Ω
• = 1.98 Ω
Capacitor:
• 10
Transistor:
• 2N3904
Input Values:
Frequency = 500 Hz
Amplitude = 100 mV
Offset = 0 V
Symmetry = 50 %
CIRCUIT#2
Components:
Resistors:
• = 2 x 99.97 Ω
• = 2 x 19.98 Ω
• = 2 x (5.07 Ω + 2.67 Ω)
• = 2 x 1.98 Ω
Capacitor:
• 10
Transistor:
• 2N3904
Input Values:
Frequency = 500 Hz
Amplitude = 100 mV
Offset = 0 V
Symmetry = 50 %
Circuit-1:
Measure the following:
MEASUREMENT:
(V)
(V)
(V)
(mA)
=
Small Signal model:
Circuit-2:

Measure the following:
MEASUREMENT:
(V)
(V)
(V)
(mA)
=

Lab 7
DESIGN OF A COMMON EMITTER AMPLIFIER: PART II
This lab uses a common emitter amplifier and design specifications to create
a stable bias system. It also introduced the emitter bypass capacitor.
Components used:
1 = 30 Ω
2 = 2 Ω
1 = 45 Ω
2 = 25 Ω
= 3 Ω
1 = 2 = 100
Circuit Conditions:
(Most of these are provided in order to find values of RE1, RE2, R1 and R2 but I am
providing you those, so you don’t have to worry about hand calculations)
= 8
1
= 52
= 1
=1
( ) = 0.65
= 80
Δ = −3
AWG:
Sine wave
Amplitude= 30mV
Frequency= 550Hz
Offset = 0V
If you want to, you can find the resistor values by using the below mentioned
formula, but you do not need to include the calculations in your lab report.
To calculate RC and RE1:
Δ

)
= (
+ 1 1 +
0.026
= ∗
+1
(
)

+ 1 =
To calculate RE2
+1
) +
= + ( 1 + 2 ) (

To calculate R1 and R2 :
= .1( + 1)( 1 + 2 )

+1
) ( 1 + 2 )
=
+ + (

=
2
1 + 2
Required:
You have to measure the values of by using LTspice/PSpice:
• ICQ
• VCQ
• VBQ
VEQ

2

Gain (Compare it to the given value if gain)
3

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