Re: [TCML] magnifier efficiency

[futuret@xxxxxxx]

Bart,

My formula is based on my coils but also on other folks' larger coils.  
I always said
that my formula was based on various coils such as my research coil, 
Hull's Nemesis,
Greg Leyh's Electrum, etc.

John
--


-----Original Message-----
From: bartb <bartb@xxxxxxxxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Tue, 9 Dec 2008 8:57 pm
Subject: Re: [TCML] magnifier efficiency


John, 
 
I thought you ran your testing of which the formula was derived at 120 
bps? I agree that higher bps may also meet the formula's prediction 
(may not, may exceed), but I thought the formula itself was derived 
with 120 bps operation. Is this not correct? 
 
Take care, 
Bart 
 
futuret@xxxxxxx wrote: 
>  
> Bart, 
>  
> My formula does not specify 120 bps. For small coils, 120 bps is > 
needed to 
> obtain adequate efficiency, but for larger coils, the bps can often 
be 
> higher at 400 to 600 bps, etc. and still meet the formula's > 
"predictions". 
>  
> Large coils tend to be more efficient anyway in the sense that > 
transformers 
> and maybe other components become more efficient when they're larger. 
> The lower frequencies that large coils usually run at may help also. 
>  
> John 
>  
> -----Original Message----- 
> From: bartb <bartb@xxxxxxxxxxxxxxxx> 
> To: Tesla Coil Mailing Li
st <tesla@xxxxxxxxxx> 
> Sent: Tue, 9 Dec 2008 12:44 am 
> Subject: Re: [TCML] magnifier efficiency 
>  
>  
> The formula assumes the efficiency of John's coils at the measured > 
power, measured spark length, at 120 bps. It is an excellent > 
prediction of potential spark length and has stood the test time. Many 
> times, coilers will fall below this value (based on their lack of > 
experience or lack of attempts to produce longer sparks with a given > 
coil). Other times coilers produce longer than predicted sparks (it > 
happens). > > The formula is empirical and not based on 100% efficiency 
or anything > of the sort. > > Take care, > Bart > > H.S. J. wrote: >> 
But, the formula most likely assumes 100% efficency and power > 
transfer. >> > -- >> Thanks, >> 
*********************************************** >> Shelton Jacinto >> 
Email: hsheltonj@xxxxxxxxx 
>  
> > *********************************************** >> >> 
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