Re: Update: Hurray! 6 Pack MOT

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

Original poster: "tesla by way of Terry Fritz <twftesla-at-qwest-dot-net>" <tesla-at-paradise-dot-net.nz>

Hi Dave
Ted L in NZ offering a few thoughts

I'd be very surprised if a PDT has a lower source Z than MOT's but they
certainly have the voltage.
I'm speculating but I'd guess that a PDT driven coil would also work well
with a large Cp for the same reasons as MOT coils.
To get the power thru put with the 4 MOT pack a Cp a little larger than
usual will enable this. I have the feeling that MOT stack performance
improves with Cp in the 180nF region because of a resonant voltage rise as
the source impedance of the MOT's of 6Hy per MOT suggests to me that mains
resonance will occur with a stack around this value.

MOT's can source brief charging pulses a lot bigger than the scondary RMS
current rating and I think tihs is one reason why they can charge big values
of Cp

Best
Ted L in NZ
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, September 25, 2002 11:36 AM
Subject: RE: Update: Hurray! 6 Pack MOT supply success


> Original poster: "Dave Hartwick by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <ddhartwick-at-earthlink-dot-net>
>
> I am confused on the issue of large C required for MOT supplies coils for
> max discharge. Why is this not the case with PDT powered coils? 0.18 ufd,
or
> 180 nfd is a very large cap for coil duty.
>
> Those 3' power arcs are not a limitation of the system, of the minimal
> vertical space.
>
> I do not doubt your observations Tim, I just don't understand the physics.
> Your MOT supplies do have shunts in, I assume? Are we talking about a
supply
> that has lower source impedance than the average PDT?
> Dave H
>
>
>
>
> Original poster: "Daniel Barrett by way of Terry Fritz
<twftesla-at-qwest-dot-net>"
> <dbarrett1-at-austin.rr-dot-com>
>
>
>     I'm drooling in my keyboard... You are getting 12 to 15 foot power
> arcs??? What are the specs on your secondary and topload?
> -I'm very curious here-
> db
>
>
>
> > Original poster: "Tim J by way of Terry Fritz <twftesla-at-qwest-dot-net>"
> <digital_raven45-at-hotmail-dot-com>
> >
> > Great! :)
> > Watch what happens to those 3' power arcs when you put your C at 0.18
> > uF.....
> >
> > STAND BACK....WAY BACK! You'll do 4-5 times the distance! And that isn't
a
> > JOKE!
> >
> >
>
>
>
>
>
>
>
>