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Re: Arc length vs pwr



>>>Hi Mark,
>>>            I have a quick answer to your query....
>>>
>>><mucho snippo>
>>>
>>>> >I would image that any flux lines that are not common to both 
>coils 
>>>
>>>> >are 
>>>> >just lost, provided they do not couple to something else nearby 
>in 
>>>> >either the expansion of collapse phase of the primary magnetic 
>>>energy 
>>>> >pulse. (ground, effective shorted turns, etc).   Most of this 
>>>magnetic 
>>>> >
>>>> >energy would collapse back in on its source coil. (the primary).  
> 
>>>If 
>>>> >we 
>>>> >open it though, (quench the spark), the voltage induced in it is 
>>>never 
>>>> >
>>>> >forced to do work and is lost. Those flux lines common to both 
>the 
>>>> >secondary and the primary would induce voltage in the secondary 
>as 
>>>> >well 
>>>> >as the primary. Some small amount of energy would most likely 
>>>radiate 
>>>> >away as RF  obeying the inverse square law.
>>>> >
>>>> >Richard Hull, TCBOR
>>>> >
>>>
>>>Mark Graalman:
>>>>   This is just a thought, but wouldn't any energy in the
>>>> primary tank that wasn't utilized in coupling to the
>>>> secondary simply remain in the primary as reactive power
>>>> creating a "standing wave" on the next primary half cylcle? I know 
>
>>>what
>>>> I'm trying to say, I just don't know
>>>> if I'm saying it right <G>
>>>
>>>Only if the gap continues to conduct in which case the energy 
>>>exchange between primary and secondary continues until totally
>>>lost (in my opinion).
>>>
>>>Malcolm
>>>
>>
>> I agree, but would that not still be the case since the
>>gap conduction time no matter how fast the quenching will
>>always be long in period in comparision to the time
>>required for a 1/2 cycle at the primary frequency?
>>
>> The half cycle period of a 100 Khz primary would be about .000005 
>sec
>>which as far as I know is a much shorter period of time than the 
>quench
>>time of a spark gap.
>>
>>			Mark Graalman
>>
>
>The coupling or K factor is only a ratio of mutual inductance divided 
>by
>sqrt LpLs.
>The ratio indicates the amount of energy transferred. Coupling does 
>not
>create or consume energy. Creation or consumption of energy is only in 
>the
>primary or secondary circuits.
>
>Jack C.
>Jack,

 That point is understood, I was talking about what the
effect to the primary is during its energy release if it
is loosely coupled to a secondary coil, or any other load
for that matter. I guess my thought was any energy that
wasn't transferred to the seconday coil would be returned
to the capacitor during the collapse of the primary field. I would think
that a ringing primary too loosely
coupled to a load or not coupled at all to a load, namely
a secondary coil would exhibit extremely high peak voltages and
distruction of the capacitor would be ultimately unavoidable. 

			Mark Graalman