## (Solved) I need help answering all of the following questions and diagrams

I need help answering all of the following questions and diagrams for ET1310 Lab 2.1 Report (Parts 1, 2, and 3). Please and Thank you in advanced. Whom ever does this for me, you're a life savor!

I am also willing to up the price

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

Name:

Date:

Instructions:

Complete the three parts?Part 1, Part 2, and Part 3 of Lab 1. When you have completed each part,

answer the questions and transcribe/transfer the test results recorded in the lab manual?s tables to the

tables provided.

Part 1?BJT Characteristics

Theory:

1. Name the three terminals of a BJT transistor.

2. Why are BJT transistors considered current amplifiers?

3. What is the relationship between IC and IE?

4. Describe how to bias a BJT transistor correctly.

5. What is the forward-biased voltage drop across the base-emitter junction?

Preparation:

6. Transcribe the component measurements from Table 6-1 to the table below.

Component

R1

R2

RBB

RCC

Listed Value

22 k Ohm

100 Ohm

1 k Ohm

5 k Ohm

Table 6-1

Measured Value

7. For a 2N3904 NPN General Purpose BJT transistor, how can you determine the location of pin 1?

the emitter?

Test Procedure:

8. Transcribe the collector current measurements and calculations from Table 6-2 to the table below.

VCE

1

Base Current = 50 µA

Base Current = 100 µA

Base Current = 150 µA

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Measured

VR2

IC

VR2

IC

VR2

Measured

Computed

Measured

Computed

Measured

2.0 V

4.0 V

6.0 V

8.0 V

Table 6-2

9. Transcribe the three collector characteristic curves from Plot 6-1 to the plot below.

Plot 6-1

10. Transcribe the DC Beta calculations from Table 6-3 to the table below.

VCE

Measured

Current Gain ?DC

IB = 50 µA

IB = 100

IB = 150

µA

3.0 V

5.0 V

Table 6-3

2

µA

Lab 2.1 Report

IC

Computed

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

11. Does the experimental data indicate that ?DC is a constant at all points? Does this have any effect on

the linearity of the transistor?

12. What effect would a higher ?DC have on the characteristic curves you measured?

13. What is the maximum power dissipated in the transistor for the data taken in the experiment?

14. The DC alpha (?) of a bipolar transistor is the collector current, IC, divided by the emitter current, IE.

Using this definition and IE = IC + IB, prove that DC alpha can be written as:

? DC =

? DC

? DC +1

15. Compute DC alpha for your transistor at VCE = 4.0 V and IB = 100 ?A.

16. What value of VCE would you expect if the base terminal of a transistor were open? Explain your

3

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

Part 2?BJT Biasing

Theory:

17. How do we describe the nonchanging, no signal output of a biased transistor circuit?

18. Why is the base biasing method unacceptable for linear circuits?

19. For which application is base biasing most suitable?

20. What is the advantage and disadvantage of the emitter bias circuit?

21. What is the advantage of voltage-divider bias? What is stiff bias?

22. What effect does negative feedback have in a collector-feedback bias circuit?

Preparation:

23. Transcribe the resister measurements from Table 7-1 to the table below.

Resisto

Listed Value

Measured Value

r

RB

RC

1 M Ohm

2 k Ohm (Two 1 k

resistors)

Table 7-1

Test Procedure:

24. Transcribe the base biasing circuit calculations and measurements from Table 7-2 to the table below.

DC

Parameter

VRB

IB

IC

VRC

VC

Computed

Value

Q1

Measured Value

Q2

Q3

Table 2-5

25. Describe the variation between the three VRC measurements. What does this variation represent?

26. Transcribe the resister measurements from Table 7-3 to the table below.

Resisto

r

4

Listed Value

Measured Value

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

R1

R2

RE

RC

33 k Ohm

6.8 k Ohm

470 Ohm

2 k Ohm (Two 1 k

resistors)

Table 7-3

27. Transcribe the voltage divider biasing circuit calculations and measurements from Table 7-4 to the

table below.

DC

Parameter

VB

VE

IE?IC

VRC

VC

Computed

Value

Q1

Measured Value

Q2

Q3

Table 7-4

28. Describe the variation between the three VRC measurements. Is this variation greater than, the

same, or less than the variation in the base bias circuit? Explain why.

29. Transcribe the resister measurements from Table 7-5 to the table below.

Resisto

Listed Value

Measured Value

r

RB

RC

360 k Ohm

2 k Ohm (Two 1 k

resistors)

Table 7-5

30. Transcribe the collector feedback biasing circuit calculations and measurements from Table 7-6 to the

table below.

DC

Parameter

IC?IE

VRC

VC

Computed

Value

Q1

Measured Value

Q2

Q3

Table 7-6

31. Describe the variation between the three VRC measurements. Is this variation greater than, the

same, or less than the variation in the base bias circuit? Explain why.

32. Compare your observations of the three bias methods tested in the experiment. Which one showed

the least variation between the transistors?

5

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

33. Draw each of the three bias circuits tested in the experiment for a PNP transistor. Assuming the same

resistors as used in the experiment, compute the base, emitter, and collector voltages. Show these

Base Bias

Voltage-Divider Bias

Collector-Feedback Bias

6

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

34. Assume you need to bias the amplifier shown below. It is desired to have the Q-point set to

approximately 20 mA of the collector current. Choose bias resistors for the voltage-divider bias that

will provide a reasonably stiff bias. Show your work.

35. Assume you need to bias the amplifier shown below. It is desired to have the Q-point set to

approximately 5.0 mA of the collector current. Choose a base resistor for the collector feedback bias

that will provide a reasonably stiff bias. Show your work.

36. For the circuit shown below and using the values calculated in problem #34, predict the effect of each

of the following problems on the collector voltage:

7

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

a. R1 opens.

b. Base is shorted to ground through a solder bridge.

c.

RE is 470 Ohm instead of 47 Ohm.

d. VCC drops to +15 V.

8

ET1310: Module 2 DC Power Supplies and BJTs

Lab/BJT Characteristics and Biasing

Lab 2.1 Report

Part 3?The Basic Power Supply

Test Procedure:

37. Transcribe the power supply fault observations from Table L2-1 to the table below.

Circuit

Component

Fault

Power Supply Fault 1a

Power Supply Fault 1b

Power Supply Fault 1c

Power Supply Fault 2a

Power Supply Fault 2b

Power Supply Fault 2c

Table L2-1

9

Symptoms of the Fault

Solution details:
STATUS
QUALITY
Approved

This question was answered on: Oct 15, 2019

Solution~000.zip (25.37 KB)

STATUS

QUALITY

Approved

Oct 15, 2019

EXPERT

Tutor

#### YES, THIS IS LEGAL

We have top-notch tutors who can do your essay/homework for you at a reasonable cost and then you can simply use that essay as a template to build your own arguments.

You can also use these solutions:

• As a reference for in-depth understanding of the subject.
• As a source of ideas / reasoning for your own research (if properly referenced)
• For editing and paraphrasing (check your institution's definition of plagiarism and recommended paraphrase).
This we believe is a better way of understanding a problem and makes use of the efficiency of time of the student.

### Order New Solution. Quick Turnaround

Click on the button below in order to Order for a New, Original and High-Quality Essay Solutions. New orders are original solutions and precise to your writing instruction requirements. Place a New Order using the button below.

WE GUARANTEE, THAT YOUR PAPER WILL BE WRITTEN FROM SCRATCH AND WITHIN A DEADLINE. 