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

Unformatted Attachment Preview

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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