RE: [TCML] Q

["Jim Mora" <jmora@xxxxxxxxxxx>]

Ok, I looked at the equations for Q, and many other parameters affect the Q
"ratio". What are the ideal variables that affect the secondary Q as though
it is considered as a stand-alone? 

Thanks,
Jim Mora

-----Original Message-----
From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
Of Ed Phillips
Sent: Saturday, December 01, 2007 12:33 PM
To: Tesla Coil Mailing List
Subject: Re: [TCML] Q

Antonio Carlos M. de Queiroz wrote:

> resonance wrote:
>
>>
>>
>> It's the primary Q that must be high.  Richard Hull proved long ago 
>> that even a small "resonator" coil in a 3 coil system, the resonator 
>> was approx 4 inches x 34 inches, and was producing 11 ft long sparks, 
>> so the Q factor of the sec coil is really not that important.
>>
>> Rich is not active on the list but I think Dave Sharpe may have some 
>> of this data.
>>
> An analysis of the linearized system shows that the effects of primary 
> and secondary Qs are exactly the same. For example, a system with 
> primary Q = 100 and a lossless secondary and another system with a 
> lossless primary and a secondary with Q=100 produce the same output 
> waveform. This is also valid for any other combination of Qs.
>
> Antonio Carlos M. de Queiroz 

    That should be obvious.  Question:  What is the effect of Q on 
streamer length assuming reasonable quenching.  In other words, other 
than for bragging rights, how important is it to create a high Q 
secondary?  How much Q is "good enough"?

Ed

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