RE: Secondary Question

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>

Thank you for the reply , now I am going slow with this because I read
where the Cp for my transformer was 30nf and I thought I should make it
30 , now you say 49nf. I planed on a order of 52 caps , I can get a few
more and run 4 strings and get close to 49.
Wire , yes I have a large wooden spool of the silver plated stranded
wire.
The tube is 6ft tall now so final length is no problem, only strength.

Rich

Subject: Re: Secondary Question

Original poster: "Gerry  Reynolds" <gerryreynolds@xxxxxxxxxxxxx>

Hi Rich,

I think we need more details.  What do you mean by C/D caps at 30
(qty or nf)??  9inch dia tube sounds OK, silver plated wire probably
isnt necessary (OK if you already have it, but I wouldn't pay a
premium for it).

Being a static gap, shoot for a Cp of 49 nf.  Your transformer is
mains resonant at 30 nf and this value should be avoided unless you
have experience at resonant charging.  The secondary should have a
winding height of around 40 inches given a 9 inch dia.  The wire
guage should be chosen to give you around 1400 turns with this winding
height.

Gerry R

>Original poster: "Rich" <rdjmgmt@xxxxxxxxxx>
>
>I want to build my 2nd coil this year and I have a question on the
>secondary diameter.
>  Power will be 13Kv 150ma transformer , RQ spark gap, MMC of C/D caps
at 30.
>My secondary can be a 9" dia mailing tube and 20ga silver plated
>stranded wire with thin insulation or
>6" PVC with 24ga mag wire.
>Any  pros or cons on the secondary
>
>Rich
>
>