Can somebody help with Superposition please

Discussion in 'General Electronics Chat' started by charij, Aug 30, 2007.

  1. charij

    Thread Starter New Member

    Aug 30, 2007
    4
    0
    Hi,

    I'm panicking cause i have an exam 2moz and i need to be able to use the superposition theory.

    I have googled and read the tutorial on ti like 100 times and have asked ppl on my course but nobody can help me :(

    My problem with the turtorial is i hve no idea how they get the Voltage over each of the resistors

    I understad how the theory works but i jus can't implement it. Can any1 walk me through an example i would be eternally grateful

    Thanks loads

    Peter Charij

    ps


    jus a simple explanation on how they get the table in the tutorial will do :p
     
  2. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    its as easy as solving a circuit as many times as the no of sources connected using kvl.
    we remove all except one source and find its effect on the circuit(in terms of current and voltage drops)
    then we remove all but another source and solve again.
    we continue this for all sources and then add their effects algebraically.
     
  3. charij

    Thread Starter New Member

    Aug 30, 2007
    4
    0
    Thanks alot recca :p

    could you possibly walk me through this question?

    [​IMG]

    Or if any1 could i would be very grateful :p
     
  4. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    attached are two files considering two sources separately.
    when voltage source is killed it is shorted.
    when current source is killed it is opened.

    i have encircled wherever the circuit was simplified using resistance eq in parallel and series.

    ask if u have any doubt.

    also the in voltage killed part u can find Vo by many methods (like finding current in a branch and finding voltage dropped by it etc.
     
  5. charij

    Thread Starter New Member

    Aug 30, 2007
    4
    0
    thankyou so much recca

    You r a star!
     
  6. recca02

    Senior Member

    Apr 2, 2007
    1,211
    0
    did u get the answer?
    its 0 + 3 = 3v

    also check the attachments if they appeared too small to u.
    i changed the format.
     
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