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Re: DC power



Original poster: "S & J Young by way of Terry Fritz <twftesla-at-qwest-dot-net>" <youngs-at-konnections-dot-net>

Sean,

Your pole pig is fine if you make a tripler or quadrupler.  And if you add a
couple of MOT secondaries, and a series diode, you can charge your tank cap
to roughly twice your DC supply.  MOT secondary inductance is in the range
of 8 to 24 Henry, which is sufficient.  The only problem is to ensure you
have a TSG with a strong air blast or a RSG whose break rate is more than
about 250-300 BPS to prevent the charging inductor from saturating while the
RSG contacts are still adjacent, thus producing the dreaded power arc.  The
more MOT secondaries you put in series, the lower your BPS can be.  With 4
in series, you can go a bit below 200 BPS.

Actually, it is not the BPS that matters.  It is the dwell time of your RSG
electrodes.  If you had a 3 foot diameter rotor, then you could go down to
less than 100 BPS because the rotor electrode velocity would be quite high.
My RSG electrodes are only at a radius of 3 inches, so I have to use higher
BPS rates to prevent power arcing.

--Steve
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Friday, March 01, 2002 1:48 PM
Subject: Re: DC power


> Original poster: "Sean Taylor by way of Terry Fritz <twftesla-at-qwest-dot-net>"
<taylorss-at-rose-hulman.edu>
>
> I have a 2400/240 pole pig, of unknown power rating, but I was
> thinking about making a DC supply from it with several MO caps and
> diodes, and a large output cap for DC filtering.  I could probably
> only go up to around 9 kv DC effectively for TC use, but does anyone
> have any thoughts on the suitability?  I was also thinking about using
> a few MOT secondaries in series for a charging inductor - do these
> have high enough inductance? Thanks!
>
> ----------------------
> Sean Taylor
> The Geek Group
> G-2 #1204
> Because the geek shall inherit the Earth! (c)
> www.thegeekgroup-dot-org
>
>
>