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Building a Rare Tube Detector
Posted March 27, 2013 by Chris
“How many times have you bought a Nixie tube at a garage sale or swap meet, only to discover once you got home that the tube was outgassed?…With a very high voltage, low current supply, one can build a portable ion source that can ionize the gas inside a tube, without even touching the tube. In effect the user ends up with a magic wand that will cause any cold cathode tube in its presence to light up.”
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