Does it change if you use just one or both of the anodes?
Does it change if you use a cathode resistor for the "1" digit?
In the few Russian circuits that I have seen they use at least 200V supply
voltage, usually 250V, and either direct drive with a transistor in each of
the cathode circuit or
On Tuesday, June 14, 2016 at 12:50:06 PM UTC-7, Mike Allen wrote:
>
> Do you guys know about this blue dot problem?
The "blue dot", is only a minor aesthetic issue. It occurs on IN-18s when
they are displaying a "1".
I've replicated the problem. It has nothing to do with being multiplexed,
or
Problem is probably the wrong word. Paul at Bad Dog Designs had told me
that some 18s develop this blue dot...as you say...when multiplexed.
On Tuesday, June 14, 2016 at 4:06:08 PM UTC-4, Pramanicin wrote:
>
> Define problem...
>
> I have a clock where I put in nothing but tubes that show the blu
Define problem...
I have a clock where I put in nothing but tubes that show the blue dot
(it's a multiplexed design) and I quite like it;-) Evidently, if the
tubes are 'correctly' driven (direct drive) then the blue dot doesn't
occur...but that's above my pay grade...
On Tue, Jun 14, 2016 at
On 14 Jun 2016, at 20:50, Mike Allen wrote:
> Do you guys know about this blue dot problem?
Yes but I think it is relatively rare. I never had it.
John S
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Do you guys know about this blue dot problem?
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Thanks Nick!
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Also...I have been told the 18s have a "blue dot" problem.
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On the other end of the spectrum, IN-1's are very cheap and are great for
experimenting, especially when you start designing your own clocks. No hard
feelings if you damage one, etc.
Several years ago I bought 25 of them, many have since died and ended up in
the microwave oven a few nights ago.
http://www.ebay.com/itm/1x-Z566M-NIXIE-RFT-Germany-TUBE-Z566-ZM1040-Z5660-TESTED-Z5660M-Z522M-RARE-/301873160821?hash=item46490ae275:g:rzsAAOSwEeFVCVe~
http://www.ebay.com/itm/VINTAGE-NIXIE-RFT-Z5660-TUBE-NOS-WITH-SOCKET-/111975081735?hash=item1a123c2707:g:sIgAAOSw3KFWeCSD
http://www.ebay.com/itm
Thanks Nick! I haven't found any 1040s on eBay currently.
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18's are a little bit more expensive that 1040's at the moment on the Bay
if you're patient enough. Although, the price for IN18's may be softening a
little as I've seen a few listings come down 10 to 20 dollars...they're
still too expensive in my opinion..;-)
Welcome to the madhouse Mike.
Cheers
gregebert...thanks for the response. Great information! I believe it's too
late...it's already become an addiction. I'm new and I've already bought three
kits right off the bat! 😆
So, 18s are cheaper than 1040s?
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Welcome to the hobby. Be warned, though, it's addictive
I've purchased a total of sixteen IN-18 tubes over the past year from Ebay,
and the pricing has gone up substantially in that time, from roughly $35US
to $50US per tube. They are the most affordable 'large' nixie tubes you
will find.
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