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Electrically determining xenon tube polarity
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coppercone2:
maybe it has to do with surface porosity and asparities that form
The Lightning Stalker:
Since this thread is basically done thanks to everyone for your help.
Fred_47:

--- Quote from: The Lightning Stalker on December 24, 2018, 12:09:29 pm ---Since sometimes it is not possible to remove a xenon flash tube without causing damage, I went ahead and tested some tubes to see if they exhibit any polarity dependent behavior. Milliamp current waveforms were measured for each tube and then the tube was reconnected the other way around. On average I noticed that these samples have a tendency to begin conduction more often in a specific direction. For these tubes at least, it was apparent to me that they conduct more easily in reverse. This may not be the case for every tube but at least for me it is a satisfying result.

--- End quote ---

So, just to be clear, which end was +?
The Lightning Stalker:

--- Quote from: Fred_47 on December 27, 2018, 10:15:17 pm ---So, just to be clear, which end was +?

--- End quote ---
It may be some peculiarities with my test conditions but the tubes behave differently when connected in reverse and forward using an AC signal.
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