Re: UPS powered coil?

["bob golding" <yubba-at-xxxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

HI All,
	Maybe One could drive a HV dc supply from one of these UPS's?. I was
thinking of a high power Cockroft Walton multiplier or something.
Probably going to be expensive unless one had access to some cheap HV
diodes. It would present a better load to the UPS though,and the filter
caps would cut down the RF hash down the wires. You would still have the
radiated RF to deal with. Wrap it in chicken wire and ground it? I have
two 1 kw UPS's laying around and have often thought of doing something
like this but have chickened out for the reasons Mike pointed out. Most
UPS's seem to die without the help of a Tesla coil on the end. I have
read somewhere about cleaning up the waveform with caps but can't
remember the details.
cheers 
bob golding

Tesla list wrote:
> 
> Original poster: "David Trimmell" <davidt-at-pond-dot-net>
> 
> I have played with modified UPS's, a 300VA with original batteries removed
> and a large capacity deep cycle in it's place. It was a "modified" sine
> wave output, looked pretty sloppy on the scope, and very triangular with
> any kind of inductive load. Tried a 9KV 60mA neon off of it, and it killed
> the wave form with any kind of short (like a Jacobs latter), with very poor
> output. I really have wanted to play more with inverter power SU's, but
> haven't the time. I suspect the circuitry (of these UPS types) would not
> lend it's self to any RF nasties. We have several thousand LBS of dead
> UPS's at work, some big >1KVA types, I have been thinking about how to
> liberate a few from the junk pile. Yup, lead acid batteries tend to be very
> heavy ;-)
> 
> Regards,
> 
> David Trimmell
> www.ChaoticUniverse-dot-com
> 
> At 08:05 PM 11/14/00, you wrote:
> >Original poster: Terry Fritz <twftesla-at-uswest-dot-net>
> >
> >Hi Alan,
> >
> >Yes!  It is thermal circuit breakered at 10 amps and could probably run a
> >300 watt coil for 10+ running minutes easily.  When it is unplugged it is
> >just a little 120VAC power source till the internal sealed lead acid
> >battery runs down.  Probably not a big deal to run it off a bigger battery
> >if one wanted to.  It is very small (but heavy!!) so it could easily travel
> >with the coil.  Parties, picnics, boating, camping, stuck on the freeway...
> >  You get the idea... ;-))  They are super cool things and mass production
> >really has them down to a darn good price.
> >
> >Cheers,
> >
> >         Terry
> >
> >
> >
> >At 10:49 PM 11/14/2000 -0500, you wrote:
> > >Terry
> > >    are you talking about plugging the coil into it and using that that
> > as a
> > >"battery" for short bursts?
> > >-Alan
> > >
> > >
> > >In a message dated 11/14/00 7:44:52 PM Pacific Standard Time,
> > >tesla-at-pupman-dot-com writes:
> > >
> > ><< Original poster: Terry Fritz <twftesla-at-uswest-dot-net>
> > >
> > > Hi All,
> > >
> > >    As part of my home web server project and at the strong
> > recommendation of
> > > several people, I got one of those 500VA APC uninterruptable power supply
> > > boxes to run my server, DSL, and Eithernet hub boxes.  They all said it
> > > would stop a ton of odd problems with 24/7 systems...  But I thought
of an
> > > additional problem for it ;-)))
> > >
> > > Now, I really can't help being tempted to run a truly go anywhere
coil with
> > > the little UPS box (like my small LTR coil).  I guess it has
protection out
> > > the wazzu, but if anyone knows of a reason it may blowup with a coil
> > > connected to it I would like to know... ;-)))  It has step simulated AC
> > > output which should do OK with a variac and a "little line noise".  I
worry
> > > about PFC correction (over correction) caps and such.  At $130 buck a
pop,
> > > I would hate to fry it but the temptation is overwhelming to give it
a try
> > > and see what happens ;-)))
> > >
> > > Cheers
> > >
> > >    Terry - Always on the bleeding edge ;-)) >>
> > >