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RE: [TCML] More wire better?



If you are attempting to raise Q by increasing the numerator of circulating-power / loss-per-cycle, wouldn't increasing the tank capacitor value accomplish this as well?  The question then becomes do inductor losses increase more slowly with inductance, vs. capacitor losses with capacitance.  And to further complicate things, I think one must also consider what happens to the losses in the other tank component - if you maximize Q in the inductor, what have you done to the Q of the capacitor by forcing it to some extreme value?  Correct me if I'm mistaken, but I'm assuming that it's the combined Q of the tank circuit that matters.  I don't myself know the answer and was wondering if you had evidence of one or the other.

The answer however is academic, as there are many more variables and constraints involved.  The primary capacitance must be selected to match the charging capability of the power supply, and this takes precedence over Q.

Regards, Gary Lau
MA, USA

> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Jared Dwarshuis
> Sent: Monday, December 17, 2007 6:46 AM
> To: Tesla Coil Mailing List
> Subject: Re: [TCML] More wire better?
>
> Here is what we can say:
>
> Q = circulating power / loss per cycle
>
> We can do very little to influence the loss per cycle in the denominator.
>
> We can do a lot to the numerator!
>
> Raise the circulating power to very large levels using gigantic inductors
> and the system Q goes up.
>
> True there will be added resistive loss, but this is insignificant.
>
>
> Jared Dwarshuis, Larry Morris

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