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Re: [TCML] Optimum tuning for max em of coil

You would also want to highly insulate the topload and coils
to prevent corona losses

On Wed, Nov 7, 2012 at 5:12 PM, Jim Lux <jimlux@xxxxxxxxxxxxx> wrote:

> On 11/7/12 12:04 PM, Sietze van de Burgt wrote:
>> I have read heard that there are two ways of tuning a coil,
>> one for maximum sparks and one for maximum em field.
>> I am interested in the maximum em field,
>> has anyone got some good links that describe
>> how to do this ?
>> I tried to search using google but didn't
>> find any worth reading (any tips on this ?)
>> what to search for exactly...
> I'm going to guess that for maximum EM field, you tune for resonance (max
> voltage on both).
>   For max sparks, you tune so that the primary resonant frequency is
> slightly low (relative to the resonant frequency of the secondary), so that
> when the sparks start to form (increasing the C of the secondary top load,
> and pulling it's resonance down in freq) it's more closely matched to the
> primary.
> Antonio has some good analytical models of various coupled resonators, so
> you could probably take one of those and given fixed Cpri and Lsec and C
> sec, adjust Lpri to maximize Vsec.
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