Re: MOT's as power supplies

["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 Alex

MOT's can easily make 13kv rms.
Use 6 MOT's
2 pairs of 3
center gnd
two secondaries per side in series with un modifed MOTs
Phased primaries to get 180deg between MOTs on each side
Outer two of each pair in oil bath
Do earth the cores
Max stress to core is about 4kv near the inner of the last MOT in each half
I use 6" PVC downpipe for the 4 MOTS in oil but use anything u can find
Best
Ted L in NZ


----- Original Message -----
From: Tesla list <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Saturday, July 07, 2001 11:16 AM
Subject: MOT's as power supplies


> Original poster: "Alexander Rice by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <ajjrice-at-yahoo-dot-com>
>
>  Hi All
>
>          I *appear* to have sucessfully placed four MOT's in series for
about
> 8Kv - they are under oil and the cores are connected such that the only
voltage
> overstress is between the primary and the core of the two outer trannies
which
> is about 1.2Kv Pk (i think - extrapolated from 0.1 V in from sig gen)They
all
> fit into one ammo tin (just - very tight squeeze) (credit to greg for this
> idea).
>     So far is very well behaved.We have already tested it on Bob Goldings'
big
> coil and it perfomed fine except for a minor mishap caused by insufficient
> insulation between two of the cores as a result of minimal space inside
the
> ammo case.
>     I was simply wondering whether anyone else had tried this before and
if so
> what their experiences were, it is a nice compact trannie good in theory
for
> 8KVA at 8Kv rms, but should i expect it to fry?
>     If it survives further testing which is expected this coming sunday i
will
> let everyone know, if it doesnt die then this seems like a good
alternative for
> those who want more power (dont we all?) but are too lazy/scared/poor/dont
> posess crane to move the beastly things... to get a piggie - it only cost
me
> £25 but could easily be done for nothing if you could scrounge parts,
except
> for the  Shell Diala oil but i believe there are alternatives
>
> Yours hopefully (...please dont die, i just ordered more caps...)
>
> Alex Rice
>
> =-> ICQ# 114007491 <-=
>
>
>
>