RE: Does it matter which way i wind my secondary?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Basura, Brian by way of Terry Fritz <twftesla-at-uswest-dot-net>" <brian.basura-at-unistudios-dot-com>

Jan/all,

I tried both same direction and opposite direction secondary winding on my
Mini-Twin. There was no difference in performance or arc direction.

 Now the split-primary was a whole different story.  With current flowing
through both primaries in the same direction it caused the arcs to leap
from the outside half of the toroids (from the side not facing the other
secondary). With current through both primaries flowing in opposite
directions the arcs will jump from one toroid towards the arcs coming from
the second toroid.

Regards,
Brian B.

 -----Original Message-----
From: 	Tesla list [mailto:tesla-at-pupman-dot-com] 
Sent:	Sunday, February 18, 2001 10:38 AM
To:	tesla-at-pupman-dot-com
Subject:	Re: Does it matter which way i wind my secondary?

Original poster: "Jan Wagner by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<jwagner-at-cc.hut.fi>

Hi,

> Does it really matter which way i wind my secondary? Does it have to be
> wound upwards or downwards? 

<snip>

But, in a twin TC coil, the winding sense in which the secondaries are
placed does play a role. They have to be placed so that, considering
primary coil winding directions, the output will be 180 degrees phase
shifted - this is if you want to have the streamer breakouts between
these secondaries. If the streamers should repel each other, you'll
have to place that way round so you get 0 degrees phase shift.

 - Jan