Validate a Nixie touching a CRT display

[Paolo Cravero]

Hello.
I read the tip mentioned in the subject in the F9020 discussion.

I own a handful of B5092/5094 and use daily a CRT TV (Samsung Plano 21" if that matters). Three of my Burroughs' work at 170 V, one at 200 V and one is apparently dead (I didn't test it beyond 200 V). But touching the CRT glass (with TV on ;-) ) did not result in any appreciable glow.

Here is what I've done: TV ON, hold with one hand the Nixie against the front CRT glas in all directions. Daylight in the room.

I might be missing something, so here I enquire the group's knowledge for further information about this "procedure".

Thanks,
Paolo

[Dalibor]

Hello!

I mentioned this trick, however I do this with a plasma globe only, not a CRT display. I read about using CRT for this trick somewhere else, but havent personally tried it yet. Plasma globe is a high frequency AC current while CRT tube works with different source of current. I will try it with my scope display tomorrow..

Dalibor

Dne sobota 25. července 2015 9:15:23 UTC+2 Paolo Cravero napsal(a):

[Jeff Walton]

The old Radio Shack plasma globe is my favorite standby for a quick gas check of any nixie tube.  It always works. 

Jeff Walton 

jwalt...@gmail.com 

Sent from the Samsung GALAXY S4

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[threeneurons]

A plasma globe works much better. I've never tried a CRT, and all my current TVs and monitors are LCD. A few months ago, I wanted to check a tube at a friend's house, but his plasma ball was broken. I decided to make my own:

That's an old Raytheon BH rectifier, that makes my ball. The tube near it, is 6802 dekatron, which works quite well, but has a cracked bakelite base.