On Wed, 01 Mar 2006 18:44:49 +0100, Charly wrote:

dxAce wrote:

http://www.dxing.info/equipment/impe...ing_bryant.pdf

http://members.aol.com/DXerCapeCod/z_transformers.pdf

Good afternoon,

Yes, I have those one on my PC already... I think I have found most of the
articles dedicated on that topic.

But since I don't know exactly what is my toroïd material and constant values
for computation (I got my toroïd from a broken power supply) I was wondering
wether there was some "classical" windings spec...

Perhaps I will begin with a 1:1 balun (it should be the same number of turns for
both windings, right ?) and then start from that point to find a better
configuration.

Thanks anyway,

Charly

Why not just buy one of these and be done with it?

http://www.geocities.com/qrp_baluns/LMZ-50.html