Hello all,
I know it is said the 6lo4v is the same as 6lo1i but I do not believe this
is true. For one thing, the heater requires a different trimming resistor
to get it to 6.3v (the resistance of the filament is different between the
two). Also, the display is fairly dim, and in a moderate
ned at the same time every day.
On Monday, September 6, 2021 at 6:00:13 AM UTC-7 dixter wrote:
> Thats great looking...
>
> On Sunday, September 5, 2021 at 7:43:27 PM UTC-5 Trumpeter wrote:
>
>> Hello all,
>>
>> I thought I would show off a project I have been c
Hopefully they don't catch on to all the test equipment with nixies in
them...nothing will be spared.
On Tuesday, September 7, 2021 at 9:51:52 AM UTC-7 nickja...@gmail.com wrote:
> Haha, that was a joke referring to overblown hype. But construction
> materials and labor are in short supply i
Yes. Twice now I have had to replace an in17 in my pv electronics "frank 3"
clock after one of my kids tipped it over. Just the weight of it was enough to
smash the face. The 4 in12 were fine.
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Just a note on the in17, the glass is SUPER thin. It takes hardly a bump to
break them.
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I hope they are fully functional! I was thinking of making them into big
thermometer display.
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Saw these pop up on ebay. I guess they are rodan CD27? The envelope looks
different than pics of CD27 I have seen. Im suprised they went for so much
considering they may be doa, but maybe someone can see something I can't?
http://www.ebay.com/itm/Vintage-Pair-of-large-Nixie-tubes-3-034-diamete
I replaced the wall wart with a salvaged laptop supply that is rated at 12v
2amps. Maybe this will help.
I did a lot of depoisioning over the last few days and the tubes (six in total)
are mostly clear now so it will be interesting to see if they start poisioning
again. They are all 1981 date
Luka that is why I am investigating further. If it was the tubes loosing gas
why amy I able to heal them?
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I'll give another wall wart a try. I hadn't thought of that.
On the subject of scopes and grounding, is there some reading I should do? I do
like to be cautious around these high voltages.
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I'm not sure what could be wrong with the clock that would cause the cathode
poisioning. I have measured 5mA to the annodes which is in spec. The hv PSU is
cranking outhe 170v. What else should I check?
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Slot machine effect every 10min. Tubes were NOS but I wonder if I got a bad
batch. I guess I should buy a scope, any reccomendations for an economical
model that will get the job done?
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If I lift the annode resistor I can take a measurement in line between the
resistor and where it is soldered to the board no? Maybe I'm doing this wrong?
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I'll do my best, I am not an electrical engineer, just a hobbiest so my answers
may be frustrating to some.
1) Measured between the annode and anode resistor.
2) On the clock I dont know, I'd have to lift the resistor again and check. On
my heathkit 5mA is about 140ish volts. I have a 10k pote
Hello gents,
Some of you may remember the issues I have had with cathode poisioning on my
in18 clock. I have been using a heathkit ip17 to repair the cathodes which has
had some success, though the positioning has creeped back in most cases.
One thing I have noticed is the tubes seem to light
Correction it's set at 170v.
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I did not scope it but it is a direct drive not multiplexed. I don't have a
scope yet. I did measure the power supply is putting out 173 volts, where I
set it when I built the clock.
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Hi folks,
I have had some time to troubleshoot my clock. I found that when running in
night mode the tubes are supplied with around 1 mA, and when in day mode are
supplied 5 mA. These readings are taken between the annode resistor (10k) and
annode. My understanding is the tubes should recei
The heathkit ip17 has variable voltage and current so I plan to go 170v at 8mah
and see what happens. I'm not savvy enough at this point to mess with
resistors on the clock.
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OK, I guess I thought the increased voltage would also slightly increase
current. Go easy I am a rank amateur:)
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Hello all,
I decided to see what effect turning the voltage from 170 to 175 would have on
my fadding digits. I do not have a current rating and have not taken a
measurement (partly because I have not had time to break out the soldering iron
the last week or so). My hope is this may reverse th
Hello Grahame,
Did the Russians make a lot of different 7 pin bases? I see some Russian 7 pin
sockets listed on ebay, maybe you could reverse engineer one?
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I am a proponent of the free market and one should sell something for whatever
someone else is willing to pay. That said, I am doubtful he will get over $2000
for these tubes, not with fellows like Dalibor making them in new production.
$50 for an IN18 is one thing but $2000 for one tube is nuts
I need some in18 with late date codes when available.
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Are you saying the helium from leaking balloon can damage these tubes? My kids
have a couple in the living room now.
Directed to the community at large:
I am in search of a spare set of tubes, is it recommended to buy tubes from
89-93ish? These have a lower failure rate? Short of messaging se
Thanks everyone, I'll grab one and give it a go.
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Jeff, could you reccomend a power supply capable of this procedure? Thank you
for your input.
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Huh, I notice that the number 8 on two tubes is failing to illuminate in the
exact same place on the digit.
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Oh well I guess I'll run them until the digits are unreadable. Just bummer
given the cost of a new set, nothing cool is cheap these days.
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09 81 is the date code.
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I don't think it's the sockets they are fairly loose fitting. I can rock the
tubes side to side with little effort.
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Hello all,
I have what was a nos set of tubes in a spectrum 18, running at 170v. At least
two tubes display incomplete digits. I have the PIR sensor installed it may be
even less than 1000 hours. Could I be doing something wrong or just a bad
batch of tubes? They are all the same date code.
I've read that the IN1 will go bad quickly but I've had a set of tubes running
8 months and they are still going strong, I think maybe it depends on the batch?
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That seller came through for me. Six nice tubes.
If my sickness hadn't recently turned to tiny Russia CRT tubes I'd have bought
another set of in18s. Some day I'll buy a case.
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I'll be putting together a spectrum kit in the coming weeks. I love Petes kits,
very well laid out and easy to assemble for an amateur like myself.
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I'm interested in IN12 but at $1.50 each including shipping, quantity 50-100
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I've been slowly hoarding various Nixie tubes mostly out of ten Soviet states,
due to the rediculiously low prices for those tubes especially the IN12. Any
idea on how deep the supply is? It seems unending.
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Incredible. I'm amazed this can be profitable, given the obvious time and
equipment required to produce these.
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Hello all,
First off, thank you all for providing input. Truly a great collection of
knowledgable folks here.
I ended up removing a mosfet from another kit and installing it in this clock.
It now runs at a normal temperature, around 90 degrees F or so. I guess it must
have been a bad part. P
Should I install a new mosfet and see if a different one runs cooler? Worth a
try?
How about these for heat dissipation?
http://www.ebay.com/itm/Enzotech-MOS-C1-Copper-MOSFET-Cooler-10PK-/252414079757?hash=item3ac50d330d:m:mb_3I4NWrjGw-R3DDEL2YEA
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Looks like it's running around 110-113 deg F.
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It's an IRFD220 looks like it's resistance is .8 ohms.
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Thank you for this detailed explaination, even though some is over my head.
Should I check the resistance between the two joined pins and one of the two
pins on the other side? Could the over heating mosfet damage other components
or will it simply fail? I want to be sure there are not other f
The HV generator is cranking out 171 volts, so it's working I just worry about
component strain. This is the PV Kit with the 4xIN12 and 2 IN17.
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The one on my newly built kit gets pretty warm. Normal? I'm not an ee so go
easy on me :)
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I found some Google info indicating it is an ok insulator, but I wanted to
check here before I proceed. These are the small in2/in8 sockets, would be much
easier than shrink insulation on all those tiny connections.
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I think this would be a fabulous application for Nixie tubes but there is very
little out there. Not being an electrical engineer, designing one myself is not
an option. I did find this one below but no updates and the schematic may as
well be gibberish to me. Does anyone know if there are any
I have a lot of my other tubes stored loose in plastic bags (20-30 in a large
ziplock for instance) then placed inside a box with a label that indicted the
tube type. This incident with the in-17 makes me rethink this practice. The
glass on the in17 is surprisingly thin.
My wife thinks I'm
Hello all,
I'm new here but this is a great resource, glad I found it.
When I received my kit (pv electronics kit with 4xIN12 and 2xIN-17) I unwrapped
the tubes to inspect and placed them back in the box loose, thinking nothing of
it. When it was time to solder the IN-17s to the board I found
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