Lab Log Book

8/12/2019 Lab Log Book

1/16

LAB 1

TASK 1

1. PSPICE Diagram


2/16

TASK 2

1. PSPICE Diagram

2.

Transient Analysis

The phase shift seen in this circuit is 0.4 degrees.

The amplification caused by this circuit is 5.431

Time

0s 0.2ms 0.4ms 0.6ms 0.8ms 1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms

V(Vin) V(Vo)

-6.0V

-4.0V

-2.0V

0V

2.0V

4.0V

6.0V


3/16

TASK 3

1. PSPICE diagram

The bias voltages of VB and VC are shown to be 2.307V and 7.004V respectively.

2. Transient response

The Phase shift of this circuit was found to be .8 Degrees.The amplification of this circuit was found to be 2531.13.

Time

1.0ms 1.2ms 1.4ms 1.6ms 1.8ms 2.0ms 2.2ms 2.4ms 2.6ms 2.8ms 3.0ms

1 V(Vin) 2 V(VC)

-3.0mV

-2.0mV

-1.0mV

0V

1.0mV

2.0mV

3.0mV1

6.2V

6.4V

6.6V

6.8V

7.0V

7.2V

7.4V

7.6V2

>>


4/16

LAB 2

TASK1

1. PSPICE Diagram

2. Transient Response

1. The Frequency where VR peaks was found to be 35.847 KHz.2. This waveform is best characterised as a band pass filter.

Frequency

10Hz 30Hz 100Hz 300Hz 1.0KHz 3.0KHz 10KHz 30KHz 100KHz 300KHz 1.0MHz

V(VR)

0V

2V

4V

6V

8V

10V


5/16

TASK2

1. PSPICE Diagram


1. The frequency where Vo peaks is located at 17.181 KHz.2. The Voltage and current at that peak are, 93.963mV and 40.920mA respectively.3. This filter I best characterised as a band rejection or notch filter.

Frequency

10Hz 30Hz 100Hz 300Hz 1.0KHz 3.0KHz 10KHz 30KHz 100KHz 300KHz 1.0MHz

1 V( Vo ) 2 I( R1 )

0V

1.0V

2.0V

3.0V

4.0V

5.0V1

0A

10mA

20mA

30mA

40mA

50mA2

>>


6/16

TASK 3

1. PSPICE Diagram

2. DC Sweep Result

The determined value of Vo = 0V is E = 35.455V

V_E

0V 5V 10V 15V 20V 25V 30V 35V 40V 45V 50V

V(VA)-V(VB)

-5V

0V

5V

10V


7/16

TASK4

1. PSPICE Diagram

2. DC Sweep result

The value of VB where it was 15 times the value of Current I in the circuit is 4.7581V.

V_VB

0V 5V 10V 15V 20V 25V 30V 35V 40V 45V 50V

I(R1) V(VA)-V(VB)

-10

0

10

20

30

40

50


8/16

TASK5

1. PSPICE Diagram

2. Parametric Sweep response

1. The RLoad value that produces the most power to the load is RLoad = 10 2. The maximum power that is available to the load resistor is 2.5 W3. Maximum power transfer is achieved when RLoad equals the value of R1, and in general that Maximum

power transfer is achieved when the load is equal to that of the total resistance in the source of the transfer

resistance.

RLoad

0 2 4 6 8 10 12 14 16 18 20

- I(R2)* V2(R2)

0.5W

1.0W

1.5W

2.0W

2.5W


9/16

TASK6

1. PSPICE diagram

2. Power Transfer response

1. The maximum Power Transfer value for RLoad is 25.040 2. The maximum possible power that can be transferred to this RLoad resistor is 2.9309 W

RLoad

0 10 20 30 40 50 60 70 80 90 100

-I(R5)*V(R)

0.4W

0.8W

1.2W

1.6W

2.0W

2.4W

2.8W

3.2W


10/16

LAB 3

TASK 1

1. PSPICE diagram

2. Transient charge and discharge curves.

3. The Fourier Distortions PresentTime

0s 2ms 4ms 6ms 8ms 10ms 12ms 14ms

V(Vin) V(Vout)

0V

2.5V

5.0V


11/16

4. Worst case scenario with R at 5% and C at 10%

5. Temperature response

Frequency

0Hz 2KHz 4KHz 6KHz 8KHz 10KHz

V(Vin) V(Vout)

0V

2.0V

4.0V

Time


V(Vin) V(Vout)

0V

2.5V

5.0V


12/16

The Temperature graph given by PSPICE states that temperature change has no effect on the tolerance of these

components.

TASK2

1. PSPICE Diagram


Time

0s 2ms 4ms 6ms 8ms 10ms 12ms 14ms... V(Vin) ... V(Vout)

0V

2.5V

5.0V


13/16

3. Harmonic Distortions present

4. Worst case scenario with resistance at 5% and inductance at 15%

Time


V(Vin) V(Vout)

-5.0V

0V

5.0V

Frequency

0Hz 2KHz 4KHz 6KHz 8KHz 10KHz

V(Vin) V(Vout)

0V

2.0V

4.0V


14/16

5. Temperature response

The Temperature graph given by PSPICE states that temperature change has no effect on the tolerance of

these components.

Time


V(Vin) V(Vout)

-5.0V

0V

5.0V

Time

0s 2ms 4ms 6ms 8ms 10ms 12ms 14ms... V(Vin) ... V(Vout)

-5.0V

0V

5.0V


15/16

TASK 3

1. PSPICE diagram


3. Parametrically sweeping of R1 from 100 to 1000

The calculated critical dampening resistance of this circuit is 632.46 Ohms, to 2 decimal places. The

extrapolated value from the PSICE simulation is 600 Ohms.

Time

0s 10ms 20ms 30ms 40ms 50ms 60ms

V(Vout) V(Vin)

-5.0V

0V

5.0V

Time

0s 10ms 20ms 30ms 40ms 50ms 60ms

V(Vout) V(Vin)

-5.0V

0V

5.0V


16/16

TASK4

1. PSPICE Diagram

2. Transient Response and Bode plots

Frequency

1.0Hz 100Hz 10KHz 1.0MHz

1 V(Vout) 2 db( V(Vout)/ V(Vin)) 3 P( V(Vout)/ V(Vin))

0V

10V

20VV

o

l

t

a

g

e

-200

-100

0

100P

o

w

e

r

S

p

e

ct >>

0d

90d

180dP

h

a

s

e

S

p

e

ct

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