Hi Brian,
I used Radio Shack Pre-Punched Perfboard and it worked fine. This is the stuff with NO copper plating on back, sides, or holes. I raised the resistors up on 1-in insulators above the board and did not have a heat problem.
Dave,
It has been the experience of myself and numerous other coilers that ASRG spells short life to NSTs. A fairly tight safety gap across your rotary will help, but an NST is really not designed for this type of operation.
Matt D
-----Original Message----
From: Dave Boyle <teslaFirma@xxxxxxxxx>
To: tesla <tesla@xxxxxxxxxx>
Sent: Tue, Sep 16, 2014 10:45 am
Subject: Re: [TCML] Resin or fiberglass perfboard for terry filter?
Funny you should mention that. I'm just about to do a first light on my
coil that has a pair of 15kv 60ma nsts and an arsg. But first I have to
rebuild my rc filter because I made it on a perf board. All those little
copper donuts make it easy to solder to the board and they also make a
beautiful short circuit path when the high voltage is applied.
I got arcing all over the back of my board so I turned off the power,
pulled the board and looked at the back. There was no sign of any
electricity at all, it looked as new as the day I bought it. So the 15kv
is skating over the surface without burning the copper. Attempts to
remove the donuts have been fruitless. So I'm rebuilding my filter on a
piece of solid lexan with custom drilled holes for the parts and an
additional lexan strip glued down the center of the board to act as a
damn. I slapped my forehead when I realized how naive I had been!
Oh and I tried the "strip the shield off the video cable" trick to make
HV wire and the stuff is useless. It burns through when close to
anything else. One thing I did that turned out to be a total success was
using twist lock bnc connectors for my hv cabling. Those things perform
like a champ!
On 09/16/2014 09:05 AM, Brian Gray wrote:
> Noob coiler here, putting together components for a 15kv NST SGTC and was
> wondering if a $4 Radio Shack resin perfboard would be okay for my terry
> filter? I've noticed a few people using higher quality (or at least I
> assume higher quality) fiberglass perfboards and I wondered if it was maybe
> because of potential heat issues with the bleed resistors or something like
> that.
>
> Brian Gray
> Armagetto@xxxxxxxxx
> _______________________________________________
> Tesla mailing list
> Tesla@xxxxxxxxxx
> http://www.pupman.com/mailman/listinfo/tesla
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