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Old 23rd May 2014, 12:28 am   #2
Radio_Dave
Nonode
 
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Join Date: Jun 2004
Location: Norwich, Norfolk, UK.
Posts: 2,543
Default Re: Unidentified Neon Tube

Sounds like an IN-24 http://tubehobby.com/show_det.php?det=49
As with any neon, AC will alternately light the anode and cathode. DC will only light one of them.

David
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