I believe that the "singing" issue is primarily a problem with larger
nixie tubes, of which I have no (as of yet) experience. I've never had a
problem with singing tubes with IN-12, IN-14, IN-8, IN-8-2, IN-16, IN-17
tubes.. but these are pretty small tubes (18mm digit height or less).
never had a problem with ghosting either, but the IN-12's in a 1x6 are
definitely lower brightness with a very slight flicker that is only
noticeable from the edge of the eye. There is a very distinct "look" to
the 1x6 mux, so I use it only for my lowest-end clocks. If I'm
interested in how it looks, I'll use a 2x3 mux or direct drive. To my
eye, the 2x3 mux looks a LOT better tan 1x6.
-Adam
On 9/21/2012 11:35 AM, Bill van Dijk wrote:
A lot of the discussion here about multiplexing is in generalities. I use a
number of Burroughs B5750 tubes (who have miraculously survived more than 30
years of clean-up attempts from the ball and chain :-)) and their
documentation specifically states that this tube is designed for time share
applications, and even provides data for increased anode currents at
different duty cycles.
Since some tubes do not have that information, I would suspect they were not
specifically designed with multiplexing in mind. This of course does not
mean it would be bad for them I suppose.... Any of the tubes I multiplexed
did not complain, although some did not like a 1-6 multiplex in the sense
that there were brightness issues and some ghosting issues to be resolved.
I have not had any noise issues from the tubes, but I use mostly small tubes
that may be less susceptible.
Bill van Dijk
-----Original Message-----
From: [email protected] [mailto:[email protected]]
On Behalf Of dr pepper
Sent: Friday, September 21, 2012 10:10 AM
To: neonixie-l
Subject: [neonixie-l] Re: Why is multiplexing nixie's bad
That answers a few points.
So overdriving tubes isnt necessarily a no no.
I also didnt know poisoning occurs at too low a current, better put a
minimum brightness limit on any new designs then.
I have a dekatron circuit that uses 'pull mids', it works without them,
I was wondering why they were there, I think your comments answer that
question.
--
You received this message because you are subscribed to the Google Groups
"neonixie-l" group.
To post to this group, send an email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit https://groups.google.com/groups/opt_out.
