[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [TCML] Newbie Grounding Question

Hi Tim,
If a strike ring is used, it must go to RF ground only (never mains ground).
Not all coils need them if their sparks just don't have the capability of hitting down to the primary. And even when they do have enough power to hit the primary, not everyone uses them. I think on average more coilers do than do not. I haven't used them for several years now. I guess it depends on the coil. If I had a coil that constantly had primary hits, I would probably install something as a last resort. But first I would try to get some field control on the sparks themselves. 

Take care,
Bart



Tim Meehan wrote:

What about the ground ring?  I am guessing that it is RF ground only.

Do all coils need the ground ring - or only high power ones?

On Dec 27, 2007 8:06 PM, bartb <bartb@xxxxxxxxxxxxxxxx> wrote:


Hi Ken,

Your right, this area of connection varies with the builders and their
reasons. You'll no doubt get both connection concepts listed. There are
two main reasons for the division in agreement. One is safety. The other
is preventing common transients on mains ground. You'll have to choose
as it's an endless debate. Either will work of course.

I connect RF ground to the NST, NST filter, secondary. My NST is placed
under the coil. I don't even run a mains ground out to the coil. I keep
mains ground at the control panel only (anything I am in contact with).
This method helps prevent transients on main ground (which I am more
concerned with). However, I also use a braided line which powers the
NST. The braid itself connects to RF ground. I run quite a bit of power
and can get strikes down to the floor quite often, so to prevent the AC
input from being hit, this braided shield helps to keep the strike from
heading back to the house.

One thing important is to be sure RF ground is "always" connected. If
not, those transients "will" find a way back to the house. But if you
give them a nice low impedance path somewhere else, they'll take that
path instead. And that is the whole point of an RF ground connection to
the NST. I do the same with all my transformers and for the same reason.

No one can guarantee that devices in the house will always stay in good
working order, but we can surely do our best to try to prevent known
issues.

Take care,
Bart


kkociolek8577@xxxxxxxxxxxxxxxx wrote:

Hi Everyone,

I've been an EE for 25 years and always wanted to build a TC. I made a

half-

arsed attempt in my younger days but it never got off the ground. I've

been

digging through the archives and am a little bit confused about what
connects and what does not connect to an RF ground. Some say that the

only

connection to an RF ground is the bottom of the secondary. Others state

that

the center tap and core of the nst, the spark gap housing, mid point of
filters, all on the high side of the nst should connect to RF ground.

Others

say this is lethal. Maybe I'm misunderstanding all this info. Can

someone

set me straight? Thanks.

Ken

--
WOW! Homepage (http://www.wowway.com)

_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla






_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla


_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla







_______________________________________________
Tesla mailing list
Tesla@xxxxxxxxxxxxxx
http://www.pupman.com/mailman/listinfo/tesla