Re: Choke Chat

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

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 12/4/01 10:19:08 AM Eastern Standard Time, tesla-at-pupman-dot-com
writes:

Mike, all,

If it's of any interest,  I used 4 unmodified MOT's in series as a 
charging choke in a DC coil system I built some time ago.  
It worked pretty well, but may have saturated at the highest powers.
It gave up to five foot sparks the way it was built and run.

Cheers,
John

>
> The Mot is ideal in this case
> because it is already
> there--i.e. you already have the core in place.  It is no problem to remove
> the primary and add a second
> secondary in series, since the primary isn't being used anyway.  This
> doubles the inductance and gives
> you about 4000 turns.  A couple of these would be plenty I would think.
> You'd need to grind off the weld
> beads on 4 Mots, but this is surely easier than a homebrew core IMHO.  To
> avoid saturation, you could gap
> them, or use fairly massive cores--the former probably being the best
> solution.  Once the weld beads are
> gone, gapping the core is easy:  just space with strips of thin plastic
> (overhead films, perhaps) and
> re-assemble using hardware store screw clamps.
>