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

Re: Torroid Formula (To Bart + All others)



Hi guys its Tab,
    Thanks for the corrections Antonio, I guess I'll have to do it the way I
originally planned it.

Tab
----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: 14 May 2000 03:08
Subject: Re: Torroid Formula (To Bart + All others)


> Original Poster: "Antonio Carlos M. de Queiroz" <acmq-at-compuland-dot-com.br>
>
> Tesla List wrote:
> >
> > Original Poster: "Tabraze Malik" <tab-at-malik13.freeserve.co.uk>
>
> > Now coming to the problem...
> >     If you have the secondary coil (which obviously has capacitance) and
> > connect the Torroid to it then basically what you have is 2 capacitors
> > connected in series. The formula for capacitors in series is
> > (1/CT)= (1/C1) + (1/C2).....
> > where CT = total capacitance and C1 , C2 are the capacitances of the
> > capacitors in series  (for as many caps you have in series). If you look
at
> > this formula it's not a big leap of maths to see that the total
capacitance
> > will be less than the capacitance value of any capacitor in series. This
> > might explain why capacitance goes down when placed on the secondary.
>
> No... The terminal capacitance is in parallel with the self-capacitance.
> Both are distributed capacitances from the top of the coil to the
> vicinities. Ct=Ctop+Cself. There are small variations in Ctop and Cself
> due to the interconnection, but this can be ignored as a first
> approximation.
>
> Toroid please, not "torroid".
>
> Antonio Carlos M. de Queiroz
>
>
>
>