helping

Discussion in 'Homework Help' started by ute, Dec 24, 2011.

  1. ute

    Thread Starter New Member

    Dec 24, 2011
    1
    0
    hi
    im a student in the university of technology in iraq
    in the electrical engineering
    i need your helping
    i want the answer of this question
    i

    [​IMG]
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,764
    2,534
    Since this is homework I have moved it to the appropriate forum.
     
  3. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    What is EWB: a circuit theorem, or perhaps a software package? Normally we would ask for some effort at a solution on your part, but perhaps tonight I will make an exception.

    This could be done with an ordinary spreadsheet, writing expressions for the upper and lower parts of the potential divider:

    The upper part R1 is the remaining part of the potentiometer track; R1 = (Rd-RX).

    The lower part R2 is the parallel combination of RL andRX ; R2 = (RL*RX)/(RL+RX).

    The potential divider expression will do the rest. If you don't know it, Google it.
     
  4. thatoneguy

    AAC Fanatic!

    Feb 19, 2009
    6,357
    718
    EWB is Electronics Workbench, which has become Multisim since NI bought them.
     
  5. crutschow

    Expert

    Mar 14, 2008
    12,974
    3,220
    So the OP doesn't have to calculate the values, just simulate it on EWB.

    ute, do you know how to use EWB?
     
  6. MrChips

    Moderator

    Oct 2, 2009
    12,414
    3,353
    Please use a title that tells us what is the question that you are asking.
    "Help" tells us nothing.
     
  7. DerStrom8

    Well-Known Member

    Feb 20, 2011
    2,428
    1,328
    Since this is a homework assignment, we can not simply give you the answer. We need to see what you have done so far, and we can help you with it from there. We won't do all the work ourselves :p:D

    Regards
     
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