Re: terry's nst filter:power res overheating?

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

Original poster: "Jason by way of Terry Fritz <twftesla-at-qwest-dot-net>" <jasonp-at-btinternet-dot-com>

Larry,

You can run power resistors till they glow - ceramic power resistors are
very hardy beasts. You could do what I did, and install them in an acrylic
box with a mains run fan at one end, and build the rest of the filter ouside
the box...
Best Regards,

Jason
[UK Geek #1139 Rank G-2]
[HV / Tesla / Laser / Comp]
[  www.thegeekgroup-dot-org   ]
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, September 18, 2002 2:18 PM
Subject: terry's nst filter:power res overheating?


> Original poster: "Laurence Davis by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <meknar-at-hotmail-dot-com>
>
> I wired the unit up tonight.  less interferrence than the choke filters i
> was using. coil output seems slightly better.  but the problem is the
power
> resistors are heating up a bit more than I would like.  I am using
> 2 12kv 30ma nsts.  my gap is way maxxed out at somewhere just under 1/2".
> I'm assuming that the gap being wider than it should is probably causing
> overheating. the power resistors after 10mins of testing were about
110-120
> degrees F.  the safety gap fires occasionally. any ideas?
> I could post a link to a picture of the board plus the wiring layout i
> chose.  none of the other components are showing any signs of heating.
what
> is the limit of the heating of the power resistors? perhaps 150F ?
> am i just overreacting?
>
> larry.
>
>
>
>