to calculate transformer windings

Discussion in 'Homework Help' started by ronald.dias, Nov 20, 2007.

  1. ronald.dias

    Thread Starter New Member

    Nov 20, 2007
    1
    0
    Hi there, thanks.

    I like to know if there is 35 turns in the primary winding of a transformer and 280 turns in the secondary, how many volts is needed in the primary to result 1100 volts kindly reply.

    Thanks
    Ron
     
  2. beenthere

    Retired Moderator

    Apr 20, 2004
    15,815
    280
    Assuming a perfect transformer to voltage on the primary relates to that on the secondary according to the turns ratio. Your transformer will step up by a factor of 280/35.
     
  3. Rahul.Goyal

    New Member

    Aug 19, 2008
    4
    0
    say n1 turns = primary side
    n2 = secondary side turn
    then by formula
    n1/n2 = vp/vs
    where vp = primary voltage
    vs = secondary voltage
    here..it is given that
    n1=35
    n2=280
    vp=?
    vs=1100 volt
    therefore
    35/280 = vp/1100
    so vp = (35*1100/280)
    = 137.5 volt
    nearly equal to 138 volt.
     
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