Re: [TCML] tcml primary self c

["DC Cox" <resonance@xxxxxxxxxxxx>]

After I saw all the corona in B&W asa 400 photos I shot with 4-8 sec
exposure time, I realized the sec coil would be slowly degraded using sharp
edged copper ribbon and quit this procedure.

On smaller nst powered coils, we just use bare 8 AWG solid ground wire from
Home Depot.  It's approx $.62/ft. and does not heat up very much on a 12/60
nst type coil.
At 120 to 200 mA (depotted, modified nsts), I use 1/4" OD refrigeration
tubing, and step up to 3/8 and 1/2" ID for all PT and pole powered coils.

Dr. Resonance




On Sun, Jul 27, 2008 at 1:19 PM, Mike Doyle <mdoyleufo@xxxxxxxxx> wrote:

> d.c. cox is right . coppor ribbon,for a primary,has sharp edge losses. i
> use ,either,varnished copper tubing,or 10gauge thinn ,stranded wire. i tune
> primary,by cutting off,or adding 10 gauge turns. 1 or 2 turns of stranded
> welding cable,on medium sized coils work great.avoid uninsulated
> primaries,please? mike.
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