Toroid _winding_ insulation (not ends)

[Ward Willats-3]

I am winding the toroids for my K2 SSB adapter.

After I got 22 turns on this thing, I noticed the insulation on 2-3
adjacent windings had (rubbed?) off, one on the top, two on the side
of the core.

Not sure how I did this.

Not sure if the bottom of these wires is making contact with the core.

Does it matter? Am I messing up the lines of force in my inductive
magnetic field or do I just rewind "to be safe."

(Tried to search the archives, but man, the usual toroid tining topic
has created so much noise...)

Thanks,

-- Ward
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[JEAN-FRANCOIS MENARD-3]

Mine did the same.... toroid side seems to scratch the wire because too
many turns to do.... if it's not too scratch.... I put red finger nails
paint on the small part of coating that is missing... the same red ;-)
and it works...


Le 04-08-17, à 22:51, Ward Willats a écrit :

> I am winding the toroids for my K2 SSB adapter.
>
> After I got 22 turns on this thing, I noticed the insulation on 2-3
> adjacent windings had (rubbed?) off, one on the top, two on the side
> of the core.
>
> Not sure how I did this.
>
> Not sure if the bottom of these wires is making contact with the core.
>
> Does it matter? Am I messing up the lines of force in my inductive
> magnetic field or do I just rewind "to be safe."
>
> (Tried to search the archives, but man, the usual toroid tining topic
> has created so much noise...)
>
> Thanks,
>
> -- Ward
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft    Help:
> http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

===============================================
Jean-François Ménard / VA2VYZ
[hidden email]

Club d'Astronomie Amateur de Sherbrooke
Club Radio Amateur de l'Estrie

Mon site web personnel : http://homepage.mac.com/jfmenard
===============================================

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[Mychael Morohovich]

Hi, Ward-

The toroidal cores are non-conductive, so it is okay if a tinned or bare
portion of the lead touches the core. With the toroids that I wind, I
purposefully make an effort to tin up to or onto the core in order to
eliminate the possibility of a builder pulling enamel into the hole in the
PCB during installation. For HF applications, this will not create a
problem.

You do not, of course, want to create shorts between adjacent or any
secondary windings.

Mychael AA3WF

K2#1025



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