Electronics practical questions

Discussion in 'Homework Help' started by Coefficient, Jun 24, 2016.

  1. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    hello Family,

    Attached file is the Electronics Practical assignment i am stucked with........as they say,if you really want to know,ask.

    i don`t know where to start from as i am new into Electrical Engineering.

    Any assistance would greatly be appreciated.

    Kind Regards
     
  2. WBahn

    Moderator

    Mar 31, 2012
    17,788
    4,807
    So what are you expecting us to do with a 14 page student manual?

    Where to start? How about: "Step 1: Connect the analog trainer to the power supply and the power supply to the Main."?

    If you are "new into Electrical Engineering", then you shouldn't be taking this course. People that are new to Electrical Engineering should be learning fundamentals such as DC circuit analysis techniques involving purely resistive circuits, plus AC analysis techniques, plus a slew of other things before they start working with transistor amplifier circuits. So drop this class and take the introductory circuits class (or it's prerequisite courses if you haven't already taken -- and understood -- them).
     
  3. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,162
    Start at page 2 and search your coursebook to learn about the objectives. Repeat as necessary for the next 12 pages.
     
  4. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,795
    951
    You guys don't understand....

    He passed the intro courses getting answers from the internet, now he just needs a little help getting his bearings

    In a few more years we can assist him (just a little) in performing his job. The company that hires him doesn't know how lucky it is.
     
  5. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,162
    Oh the irony. A laid off western engineer assisting their replacement on an internet forum about how to do the job.
     
  6. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    i am student....and this home work was given to us individually,if it was a group thing......a combination of good heads would do.

    i am not asking for everything but a little idea of what i would do will go a long way....and i don`t know if i am getting right or wrong,i have been so busy trying to understand the whole thing with the calculations and graphical solutions involved but all to no avail.

    i believe with some learned individuals here.......i will grow to help people in electronics stuff someday.

    much Regards

    Dear Sir,

    i have done dc circuit analysis but there was no hands on practicals like this one.......i am not asking for everything,just some ideas of how i can go about this....i believe i will understand.

    thank you

    Dear Sir,

    i am a student.........i am beginner so to say
     
    Last edited by a moderator: Jun 26, 2016
  7. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,162
    I understand you are a student. What textbook did you use in the course?

    The point is you just might have to crack open that book to research the stated objective in each exercise to refresh your knowledge of the subject.

    The members are here to help you along. In order for us to help ... we need to see some work.
     
  8. tracecom

    AAC Fanatic!

    Apr 16, 2010
    3,871
    1,394
    It's a lab manual which means that the work is to be done in a lab with real components and real test equipment. Do you have access to such a lab? Or do you have access to the Livewire simulation software mentioned in the manual?
     
  9. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1

    there was no recommended textbook for us,..all we do is download eBooks on the internet and read.

    I have Electrical Technology textbook by terajah

    yes...I have Livewire software in my Laptop and I can use it well.....my problem is in measuring....VB,VCC,VBE,VCE and other things involved

    I have the software sir..…please guide me
     
    Last edited by a moderator: Jun 26, 2016
  10. tracecom

    AAC Fanatic!

    Apr 16, 2010
    3,871
    1,394
    The instructions in the lab manual seem rather plainly written step by step. I don't know what I could add; do you know how to measure voltage in the Livewire software?
     
  11. Kermit2

    AAC Fanatic!

    Feb 5, 2010
    3,795
    951
    This is the time for you to TRY.

    Something. Anything.

    Make a mistake. Make another and another.
    You WILL learn when you do something wrong. Do not fear failure.

    You learn lots of lessons by trying and failing. The person who does something perfectly the first time has learned nothing. He was not challenged to grow beyond what he already knew.

    TRY. You WILL fail. You will try again. You will learn things, and THEN you will succeed.
     
  12. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    yes ..........i know how to measure voltage using the voltmeter tool in the software.

    in the procedure 1.1......;

    Measure VB, VC, VCE and VE.
    Step 5: Calculate IC: Use the formula below IC =VCC-VC/RC = 12−VC/100
    Step 6: Plot the operating line and the operating point on the sketch above. Use the following h parameter values for your calculations: hfe = 100, hie = 2K, hoe 1 = 40K

    Now, to measure VB.........using the livewire software,do i have to connect the voltmeter between the base of the transistor and the Vcc or to the ground........or what`s the best way of doing this?.

    To measure Vce,do i have to connect the voltmeter between the collector and emitter pin of the transistor? or what`s the best way of doing it?

    in the STEP 6 above,i don`t really understand this one...........any explanation or demonstration is appreciated.



    From figure 1.2 to experiment 3 is something i have been trying to assimilate without success.
     
    Last edited: Jun 26, 2016
  13. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    thank you.

    In the manual,Experiment 2 and 3 seem too difficult to me,i have read about transistors but have not done this version of practical on it before.

    Please tutor me on this one,so i can learn and also impart them on others.

    Regards
     
    Last edited: Jun 26, 2016
  14. WBahn

    Moderator

    Mar 31, 2012
    17,788
    4,807
    Did you read Step 1?

    Where you able to complete Step 1?
     
  15. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    yes sir..........i have completed step 1 to 5
     
  16. WBahn

    Moderator

    Mar 31, 2012
    17,788
    4,807
    Then why do you keep saying that you need someone to tell you where to start?

    Okay, so you have completed steps 1 to 5. What happens when you try to complete the next step?
     
  17. Coefficient

    Thread Starter Member

    Sep 5, 2012
    37
    1
    i still do not understand other steps.......the step 1 to 5 i did,i am still unsure of the answers i got.

    i have not been able to get any guidance.
     
  18. WBahn

    Moderator

    Mar 31, 2012
    17,788
    4,807
    You aren't giving us anything to work with.

    How can we possibly tell you if the answers you got are correct when you won't tell us what answers you got?

    How we can tell you what you might have done wrong when you won't tell use what you did?
     
  19. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,162
    When doing the lab, you can always do a screenshot of your computer to upload when you have questions.
     
  20. JoeJester

    AAC Fanatic!

    Apr 26, 2005
    3,373
    1,162
    You were to make some measurements in Step 4. What were your results?

    You were to make a calculation in Step 5. What was the result?

    Show your work on the Step 5 calculations.
     
Loading...