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#1
11-20-2007, 01:24 PM
 ronald.dias New Member Join Date: Nov 2007 Posts: 1
to calculate transformer windings

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
11-20-2007, 01:27 PM
 beenthere Senior Member Join Date: Apr 2004 Location: Missouri, USA (GMT -6) Posts: 15,815 Blog Entries: 10

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
08-19-2008, 02:08 PM
 Rahul.Goyal New Member Join Date: Aug 2008 Location: indore Posts: 4

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.

 Tags calculate, transformer, windings

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