Re: UPS powered coil?

["David Trimmell" <davidt-at-xxxxxxxx> (by way of Terry Fritz <twftesla-at-xxxxxxxxxx>)]

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 ;-)) >>
> >