[Prev][Next][Index][Thread]
Re: transformer rewind
Ron,
110 primary turns at 220 volts is plenty of turns for a 8 in^2 center leg.
15kv and 22 awg sound good. 110*15000/220 = 7,500 turns. So 3,750 turns on
each leg. It should be easy to make. It sounds like you have enough room to
go for 20kv. Just make sure your caps can handle it. If you have lots of
room on this transformer fill it up with insulation between layers of turns or
if you feel like you can do it and have enough room on this transformer you
can wind each secondary for 15kv. Then if you wanted 15kv and lots of current
you could parallel them. If you wanted 30kv you could put them in series.
Make sure the two secondary have the same potential and if they don't peel
some turns off until they do. :)
Erik Schulz
> Why in the world can't my wife understand the value of spending hours in
> the garage in pursuit of the ever illusive spark???? Now for the more
> serious and less aggravating question. I have a very heavy double 'E'
> transformer core that I want to rewind for tesla use. The middle leg csa
> is 8 in^2. Both outer legs, top and bottom have a csa of 6 in^2 each.
> Lots of area within for primary and secondary. This is my first rewind
> and since I anticipate using several km of wire on my secondary I want
> to do it right the first time. It came from a constant voltage
> transformer but the windings were so hacked up that I couldn't get a
> count of the number of turns on the primary. Q1 - would 110 turns on the
> primary be sufficient for 220 v. I don't know the actual gauge but I
> will be using at least the same as was on it ( heavy ). Q2 - I
> anticipate a secondary center tapped to the middle leg. Using 110 turns
> on the primary I will be able to wind the secondary for 15 kv using 22
> awg and have room to play. Sound good ?? Your ideas will be much
> appreciated.