[Prev][Next][Index][Thread]
Re: Secondary winding spacing
Hi Marco,
> Original Poster: "Marco Denicolai" <Marco.Denicolai@tellabs.fi>
>
> Hello all.
>
> My secondary is 71" tall (winding is 59" long) by 15.7" o.d.
>
> 1. Should the last turns of the secondary winding (near the top) be spaced
> instead of being thight wound as the rest of the coil?
>
> 2. If yes, how many turns and what spacing (about)?
>
> 3. Have anybody got strong evidence that it improves anything?
>
> Regards
The spaced turns at the bottom might draw more capacitance into
fewer turns at the top but that might be passe if you are going to
operate with a topload.
If I were going to be doing your research I would want to build
the best secondary I possibly could (with consideration given to
convenience in size and ability to withstand a high output voltage
and for me that would be a spacewind with 1:1 spacing and wire no
less than 3 skin depths thick at the lowest possible frequency of
operation.
Regards,
Malcolm