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Registered Member #543
Joined: Tue Feb 20 2007, 04:26PM
Location: UK
Posts: 4992
Calorimetric measurements of optical signals in electrostaticdischarge studies Kucerovsky, Z.; Greason, W.D.; Flatley, M.W. Industry Applications, IEEE Transactions on Volume 38, Issue 1, Jan/Feb 2002 Page(s):77 - 84 Digital Object Identifier 10.1109/28.980358
Summary:A method based on calorimetry and an instrument are described for the absolute measurement of the energy contained in optical radiation, especially in the optical signatures of electrostatic discharge. The optical emission of a spark gap, comprised of two stainless-steel spheres, was collected by an optical condenser system and focused on the calorimeter sensor. The system was calibrated using a set of light-emitting diodes and tested using either single-pulse discharge or a continuously operating optical source. The calorimeter system detectivity, in terms of output voltage related to the input energy, was determined to be 4.3 × 107 V·J-1 and its detection limit was 2.3 × 10-13 J. The system has application for nonintrusive characterization of optical emissions associated with discharge events
What about if there is a way of acoustically measuring and calibrating the *bang* that the spark gaps make. The bigger the current through the spark gap, the louder the bang, thats for sure. There has to be some normality in there... or not? The thermal effects on CuSO4 loads seem indeed not an easy way to measure the outputs of a marx.
Registered Member #1262
Joined: Fri Jan 25 2008, 05:22AM
Location: Maryland, USA
Posts: 451
PanosB_GR wrote ...
What about if there is a way of acoustically measuring and calibrating the *bang* that the spark gaps make. The bigger the current through the spark gap, the louder the bang, thats for sure. There has to be some normality in there... or not? The thermal effects on CuSO4 loads seem indeed not an easy way to measure the outputs of a marx.
Yeah I think so actually, assuming the air is uniform.
It wouldn't be that hard to figure out how much current is required to produce a certian amount of plasma, and from there you just need to calibrate the amount of plasma to the sound pressure levels.
Of course you could run into the problem of gaps producing varying amounts of plasma due to conditions such as moisture in the air, not to mention triggering method and electrode configuration.
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Marx Power Measurement with CuSO4 resistive divider
