Ah, ok. Thanks David
I have built a µC controlled muxing tester... will put all about it on
my homepage soon. I can switch from direct drive with rated current to
muxed, with higher current and compare the glow. That makes it easy to
find out the muxing current for a tube to get approx the
On Jan 19, 11:04 pm, David Forbes dfor...@dakotacom.net wrote:
On 1/19/11 9:42 PM, will wrote:
I'm building a nixie clock based off of four IN-14 tubes (currently in
the mail from Russia). I'm multiplexing the tubes in groups of two, if
it matters much. I've read all around for
On 1/20/11 10:30 AM, will wrote:
Wait... sphere's nixie page says 170V and 33k. Is 180V 10k really
reasonable? Also, is the purpose of the anode resistor not to
decrease the voltage across the tube? Does the resistance of the tube
decrease significantly when you energize it or something?
What
Think of the tubes acting a bit like a zener diode. [Or old-time valve
regulators eg VR105 ]
Same principle as fluorescent light tubes too for that matter. [And the
reason for the Ballast]
John K.
- Original Message -
From: will ossumguyw...@gmail.com
Does the resistance of
On 1/20/2011 12:47 PM, JohnK wrote:
Think of the tubes acting a bit like a zener diode. [Or old-time valve
regulators eg VR105 ]
They have a strike voltage, considerably higher than
the sustaining voltage. Before they ionize and start to flow
current, you need the B+ voltage at least that
Unfortunately, I've never used an old time valve regulator, a
fluorescent light tube, or a zener diode. LOL. I feel so stupid when
working with this kind of hardware...
I'm now starting to think about it like this-if a higher value
resistor is used, the current through the nixie decreases. This
Read the initial blurb here, around page 6:
http://www.neazoi.com/technology/logic/GE-lamps.pdf
Bill
On 1/20/2011 1:58 PM, will wrote:
Unfortunately, I've never used an old time valve regulator, a
fluorescent light tube, or a zener diode. LOL. I feel so stupid when
working with this kind of
Yes, set it to 170VDC.
Dieter
Thanks... But again, what kind of voltage should I set the supply to?
Many seemed to think that 170v was enough, but I guess not...
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Thanks... But again, what kind of voltage should I set the supply to?
Many seemed to think that 170v was enough, but I guess not...
I'd go at least 180V, maybe even higher (190V-200V). For a couple of
reasons.
One, your muxing it. Nixies don't turn-ON instantaneously. There is
some turn-ON
Good point... OK, looks like I might be increasing the voltage. Also,
my A1A lamps came in the mail, I see now about the voltage holding
effect. With a 100k ohm resistor it holds at about 60v, and with a
200k ohm it only drops to about 55.
On Jan 20, 7:12 pm, threeneurons threeneur...@yahoo.com
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