Re: [TCML] Toroid Capacitance

[Nicholas Hall <ngharo@xxxxxxxxx>]

Thanks all!  I did kind of shrug off and throw out guesses at some variables
like surroundings and primary to secondary wire length.

I'm new to coiling and HV in general and learning the formulas as I go.

Is there a "best" way to measure inductance of the secondary?  I read a
method using a reference resistor and signal generator -- ok method?
On Sep 16, 2011 7:56 PM, "Bart B. Anderson" <bartb@xxxxxxxxxxxxxxxx> wrote:
> Hi Nicholas,
>
> Javatc should never be that far off. The ground plane, the
> surroundings, and actual heights above ground are just as important as
> the basic coil data. Likely there is input error somewhere. Ensure the
> turns are real also. An easy method of that is to measure the secondary
> inductance and compare to the stated output for Ldc.
>
> Take care,
> Bart
>
> On 9/16/2011 7:15 AM, Nicholas Hall wrote:
>> Hello All -
>>
>> I recently have been tuning my coil and found it interesting that my
>> numbers were quite a bit off of that of JavaTC. Essentially I found
>> the resonant freq of my secondary with a signal generator and a scope.
>> My tests shown I resonate at 274khz; JavaTC has me down at 240khz.
>> I'm trying to figure out what JavaTC is not accounting for with my
>> setup.
>>
>> Does density of a toroid affect capacitance or is it strictly
>> dimensions? Also wondering if I measure topload capacitance with a
>> simple capacitance setting on a Fluke multimeter? I've been thinking
>> of purchasing one.
>>
>> Thanks
>>
>> Nicholas Hall
>> 262.706.1337
>> ngharo@xxxxxxxxx
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>
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