RE: THOR Bang energy vs. streamer length measured

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Original poster: "Denicolai, Marco" <Marco.Denicolai-at-tellabs-dot-com> 

Hi Terry,

Yes, I understand what are you driving at. I just don't believe anymore
in the black box paradigm, where the more energy (or energy feed rate,
the power) you use the longer streamer you get out. I think the extra
(average) power will just go into more heat or more on-time, not more
length.

I see it as follows. If you switch a light on and off 3 times a second
instead of once a second you won't get a brighter light, just the same
intensity light on for a longer time.

We can't measure the energy fed to the streamer by its length alone. The
same length can conduct a different amount of current, with a different
waveform, different RMS value, etc. That is, the same length can account
for a different amount of consumed average power.

Therefore I would be glad if you could perform also a set of
measurements with the same charging voltage but different BPS.

Best Regards

 > I was thinking that if I charge say a 10uF cap to 200 volts,
 > then the bang energy would be  0.2 joules.  At say 100 BPS
 > the coil input power would be 20 watts.  At 1000 BPS it would
 > be 200 watts...  So the streamer length would naturally
 > increase just due to the higher input power.
 >
 > However, if at 1000BPS, I ran the cap voltage at 63.25 volts,
 > the power would still be 20 watts input.  Then, any increase
 > in streamer length would be just due to the change in BPS.
 >
 > Then you could have a streamer length Vs. BPS graph of a coil
 > with a constant input power.  Such a graph would just show
 > the effects of BPS on streamer length.  One would have to
 > account for some losses and switching voltage drops...
 >
 > Does this sound reasonable??
 >
 > It would be easy to do the constant cap voltage test too...
 >
 > I will try and determine what size power supply would be best
 > and see if I can find one cheap...
 >
 > Cheers,
 >
 >          Terry
 >
 >
 >
 >
 >