Re: 120 or 240 or 480 BPS??

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-uswest-dot-net>" <Mddeming-at-aol-dot-com>

In a message dated 2/4/01 3:10:00 PM Eastern Standard Time, tesla-at-pupman-dot-com 
writes: 


>
> Subj: Re: 120 or 240 or 480 BPS?? 
> Date: 2/4/01 3:10:00 PM Eastern Standard Time 
> From:    tesla-at-pupman-dot-com (Tesla list) 
> To:    tesla-at-pupman-dot-com 
>
>
>
>
> Original poster: "BunnyKiller by way of Terry Fritz <twftesla-at-uswest-dot-net>" < 
> bigfoo39-at-telocity-dot-com> 
>
> Tesla list wrote: 
>
> > Original poster: "Bill Trumpet by way of Terry Fritz 
> <twftesla-at-uswest-dot-net>" <billtrumpet-at-hotmail-dot-com> 
> > 
> > Hello TCML, 
> > 
> > Would any of you be so kind as to explain to me the fundamental 
> differences 
> > in the BPS settings for SRSG's?  What can I expect from the different 
> break 
> > rates?  What rates are good for what type of XFMR?  How do break rates 
> > effect the cap values needed for best performance? Any and all tid-bits of 
> > info appreciated. 
> > 
> > Thank you all, 
> > 
> > Bill Trumpet 
>
> Hi Bill.... 
>
> basically ......  a small transformer with a cap larger than the resonate 
> value of the transformer uses 
> 120bps ( NST with .01mF)  a large transformer ( piggie) with a smaller than 
> resonate sized cap can go to 
> 240 bps. A magnifier system can use 480 bps.  but for best results and 
> longer sparks, 120 bps is the 
> optimum setting. this allows for a full charge ( current and voltage) to 
> build up in the cap befor it is 
> discharged to the tank circuit.   (( 120 bps is set for the peaks +/- of 
> the AC waveform)) any additional 
> bps not at 90  (+/- 1-2 degrees) will result in partially charged caps at 
> the dischage ( gap closure) 
> therefore not giving you the fullest amount of power to the tank circuit. 
>
> Scot D



A small caveat: 
If you are someplace in the world with an other than 60 Hz supply, adjust BPS 
proportionately. 
Matt D.