On Sun, 9 Jul 2017 10:48:58 -0000 (UTC), frank
wrote:

Just a little update, I've tried regular neon indicator bulbs (most of them
start conduction at around 75V) and only one showed oscillations and
only at low max current ratings.
https://www.dropbox.com/s/padumhxip1...-neon.zip?dl=0

Here're a few pictures of the V/I traces of regular small lamps.
Tilted traces are lamps with internal resistor, so the resistor is
tilting the trace.
Frank

The one that oscillated (IMG_1950.JPG) looks very much like your
original video.
https://www.youtube.com/watch?v=DeKPkG5T1xc
It would be helpful if you increased both the vertical and horizontal
gain of your photos so some detail could be seen:

If you happen to have a few identical NE-2 lamps, put three in series
to get something close to the 200v as in the gas discharge tube. Then,
compare the displays.

Also, smaller JPG's please. This test does not require 12 megapixel
images.


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Jeff Liebermann
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