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Re: small coil



Solved my own problem.  I tried to run it backwards off 120v.  Thin
secondary couldn't handle it for long.  It hummed for about a second
with a little arc between two leads off primary, then PUFF, and a cloud
of smoke.  Now it's time for a small neon or an obit.

Tesla List wrote:
> 
> Original Poster: Raycroft <k.raycroft-at-worldnet.att-dot-net>
> 
> After building a medium sized TC (450w), I would now like to attempt
> building a smaller one, and would like to make the transformer, cap, gap
> and primary to fit in a 6x6x6 box with the secondary coming out of the
> top.  Is it possible to use a little transformer from an old printer?
> The reason I ask is that I had an old epson 11" printer that died, and
> there was a stepdown transformer in there.
> 
> Big questions:  I assume the transformer is about 120:12 so I would get
> about 1200v.  I may have to put several in series.  Now, about current.
> Do I need to limit the current some way, or will it have high enough
> inductance to limit itself?
> 
> Most important: Does it seem feasable at all?  I just don't know.  NST's
> provide enough voltage, current is limited, and are designed to step up,
> but I have no clue about how hard one can drive a stepdown transformer
> in the opposite direction.  Any help would be greatly appreciated.
> 
> Thank you for your time,
> Jason Raycroft