RE: NST TEST GRAPHS Attn; Terry

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Terry Fritz" <teslalist-at-qwest-dot-net>

Hi Daniel,

That is sort of a hard question.

Going from the charts at:

http://hot-streamer-dot-com/TeslaCoils/Misc/NSTStudy/NSTStudy.htm

We see that the actual VA of a transformer can be pretty high.  My 15/30 
can reach 803VA in a static gap system.  803 VA / 120vac = 6.7 amps.

But in my simple testing, I was using a 4 amps fuse. since I didn't think 
it should go over 4 amps.

In a Tesla coil, having PFC caps can make a dramatic difference in current 
draw too.

In my coils, I can calculate or model the currents and directly measure 
them so I know pretty much what the current should be.  But that does not 
help most people.  I guess I don't have a "good" answer here other than 
trail and error :-(  I guess, this subject needs more thought...

The fuse is just a standard 1/4 x 1-1/4 "fast blow" fuse like Radio Shack 
sells.

Cheers,

         Terry


At 10:37 AM 1/20/2003 -0600, you wrote:




>Terry;
>
> >This is why I recommend NST input fuses, in case the darn thing goes
> >nuclear!!  There may be modes in which the thing turns into a high-power
> >high-voltage bomb!!  Don't want to find out the hard way....
>
>What value fuse do you suggest? Any particular type or style work best in a
>HV enviornment
>
>Regards,
>
>Daniel