Re: [TCML] Low power coil means physically small coil ?

[Gerekos Christopher <gerekos.christopher@xxxxxxxxx>]

Hello,

Thank you for your answers.

Now about the complex questions, i expect the factors of influence to be
numerous and interlinked, but could i have some elements of answer or
literature about them ? I'm really interested in the deep theory of Tesla
coils.

With kind regards,

Christopher Gerekos

2012/6/27 Jim Lux <jimlux@xxxxxxxxxxxxx>

> On 6/26/12 1:53 PM, Gerekos Christopher wrote:
>
>> Hello,
>>
>> I'm currently building a low-power Tesla coil, with the NST delivering
>> 6kV,
>> 25mA. At the moment, only the capacitors have been mounted (20 nF).
>> Following how I plan to build my Tesla coil, I see that its resonant
>> frequency will be around 290 kHz.
>>
>
> which is fine...
>
>
>
>> On many websites, I saw that such low-power coils are physically small,
>> which implies their resonant frequency is high. Is there a specific reason
>> for that ?
>>
>
> yes..  the capacitance of the secondary coil and top load are small, and
> you have fewer turns on the secondary, so the inductance is low.. both push
> the frequency up.
>
> Then, you want the primary capacitor small enough to be charged fully by a
> low power power supply, the primary L will be small so it will have low
> inductance.
>
>
>
> If a low-power coil is physically larger, will its performances
>
>> be lower ?
>>
>
> That's a complex question.. a very large coil won't have enough energy to
> get the voltage on the secondary high enough to support spark growth.
>
>
>
>  And at which extent does the resonant frequency play a role in
>
>> arc length ?
>>
>
> That's an even more complex question.
>
>
>> Thank you in advance.
>>
>> With kind regards,
>>
>> Chris Gerekos.
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>>
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