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Re: [TCML] BPS Testing

In a message dated 3/16/2008 3:48:02 P.M. US Eastern Standard Time,  
bartb@xxxxxxxxxxxxxxxx writes:

>If I  run the numbers with faceplate transformer values, then 82 bps. I 
>was  expecting about 95 and got 104. Higher, but reasonable. The 120V 
>test  last week was 1.143 higher, this is 1.268 higher. So firing rate  
>increased by 11% after bumping the voltage up to 140V. This could be  
>ferro resonance or maybe some low voltage arcs occurring due to enough  
>ionization around the electrodes to allow low voltage breakdowns. The  
>higher energy at 140V should enhance this situation. The light can't  
>distinguish the energy level, it only knows breakdown occurred. Also,  as 
>the frequency of breakdown is increased at 140V, this should also  
>enhance low voltage breakdown occurrences increasing the overall bps  
>even further.

Take care,

You're using a static gap not a synch rotary gap right?  The static  gap
probably can't draw as much power through the NST as a synch rotary  can.
I can't remember what kind of gap I was using when my re-potted 15/60  NST
drew 25 amps.  I also don't remember how much power Gary's 15/60  drew
back when he was using the static gap, but I know the sparks were a  lot
shorter than they are now.   

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