Re: Stacking MOTs

["tesla" <tesla-at-paradise-dot-net.nz> (by way of Terry Fritz <twftesla-at-uswest-dot-net>)]

Greeting All
Sucessfull with 4 MOT's. All primarys in parallel . Modified two MOTS by
lifting the secondary earth and feeding it unmodified MOT. Arranged for C.T.
earth and 4.5kV per side phased by primary phasing to give 9kV.

Used 6" PVC pipiping to house the two outer xfrmrs and filled these with
oil. The 6" PVC pipe holds the MOTS just right.

Selected outer MOTS for best looking clearance to the core. Been advised by
others this trick can be extended to up to 4 xfrmrs per side. Inductive
ballasting and Power Factor correction were used.
Rgds
----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, August 30, 2000 2:15 AM
Subject: Re: Stacking MOTs


> Original poster: FutureT-at-aol-dot-com
>
> In a message dated 8/28/00 9:51:40 PM Pacific Daylight Time,
tesla-at-pupman-dot-com
> writes:
>
> > Original poster: "Richard Kircher" <richard.kircher-at-worldnet.att-dot-net>
> >
> >  Hi All,
> >   Has anyone figured out how many MOT HV secondaries (about 2100 volts
each)
> >  can be connected in series with the primaries connected in parallel to
the
> >  120 VAC line?  It would seem that primary to secondary break-down would
> >  occur for those secondaries on top of the stack.  Does anyone have any
> >  tricks for doing this like floating the primaries above ground some
how?
> >
> >  Dick
>
> Dick,
>
> I've used 4 in series, and gotten 62" sparks, but the other ones
> were showing corona sparking at high stress points.  A huge
> 1:1 isolation transformer could be used to float the primaries.
>
> John Freau
>
>
>
>