Also, forgot, my cycle program is very simple, the first tube cycles
really fast, every time the first tube goes from one to zero the next
tube increases by one. Once the second tube is all the way up to zero
the dots blink on all three tubes, then the third tube increases by
one. Is that the answe
OK, done. It looks to me like for some reason the seven on both tubes
is a "problem" digit. If the 7s are connected together, their ghosting
is especially bad. If the "hot" seven is mixed with another digit (I
used the six) the ghosting "infects" the six as well, but only to a
very minimal extent.
Hi Yall,
Just to let you know I put another nixieneon clock on ebay for 99 cents :)
The item number is 300523519646
Have fun!
-joe
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Will, I can not be sure what is actually happening because I am not there
looking over your shoulder !
But, how about a slightly different approach - on tube 1 swap 7 and [say]
3, AND on tube 2 swap 7 and [say] 9.
Just at the tubes; all other driver circuits/wires to be for the 'normal'
clock.
OK, I tried moving the seven around on the board with no success, but
I noticed that when I unplugged the seven on the active tube, the
seven on the inactive tube stayed unlit. So it looks like the first
tube (the active one) might be storing energy capacitively on the 7
digit, but that still doesn
On 2/6/11 1:54 PM, will wrote:
OK, take a look near the bottom of sites.google.com/site/willyager/
nixie-clock to see pictures of the top and bottom of the anode
controller, maybe it will help.
Since only the 7 digit is messed up, perhaps it's the prototyping board
that's doing it. After all,
OK, take a look near the bottom of sites.google.com/site/willyager/
nixie-clock to see pictures of the top and bottom of the anode
controller, maybe it will help.
On Feb 6, 12:41 pm, David Forbes wrote:
> On 2/6/11 11:25 AM, will wrote:
>
> > Hey,
> > I just tested M.J.'s anode driver, with no lu
Payment sent! Thanks a ton!
On Feb 5, 7:29 am, "Timothy Laing" wrote:
> Well I did some poking around on the computer. I didn't have a save as option
> when working from the My Pictures folder in WinXT. So I tried this option of
> sending the pictures as attachments to E-mail. I never use the
On 2/6/11 11:25 AM, will wrote:
Hey,
I just tested M.J.'s anode driver, with no luck. Performance is the
same. Also, the reason I don't need a resistor between MPSA92 and
MPSA42 is because (according to Jason Harper) the resistor between
MPSA42 emitter and ground forms a constant-current driver.
Hey,
I just tested M.J.'s anode driver, with no luck. Performance is the
same. Also, the reason I don't need a resistor between MPSA92 and
MPSA42 is because (according to Jason Harper) the resistor between
MPSA42 emitter and ground forms a constant-current driver. Check out
http://nixietube.info/Ni
On 2/4/11 11:09 PM, will wrote:
I got my IN-14s in the mail the other day (Well, three out of four,
one was broken, but m_bulb on ebay very kindly offered to send me two
more tubes. Awesome customer service right there). I've been working
on multiplexing them, and everything works well except for
Also, as for current leakage, remember that my DMM literally shows
like 6mV from anode to ground when the anode is "off", but then for
some reason whenever the "7" on the other tube lights up, the anode
voltage shoots up, and the same thing happens to a smaller extent with
the decimal points.
On F
Hey MrNixie, I can't seem to access your link.
And indeed, now is a time when I find myself wishing for a good scope.
I'm trying to contact a guy on craigslist right now for one.
I was able to switch my MOSFET pretty well with a totem-pole assembly
(two 100 ohm resistors connected to PNP and NPN tr
Will, This is the point (in case you hadn't noticed!) when a 'scope
comes in real handy! You really want to pursue that - I use mine a lot
for fault finding my designs! It will pay for itself in your time,
Teach you loads and reduce frustrations.
I think your issue is not an AC (i.e. transistors n
Hi Morris,
I just checked Ebay and found none, which I find quite unusual. There
used to be a seller (I *think* it was Micah Mabelitini from this group)
who had listed them for quite some time.
Best regards,
Jens
Am 06.02.2011 09:37, schrieb morrisodell:
Hi all,
I have to repair my old fai
Hi all,
I have to repair my old faithful VFD clock which has given faithful
service for over 30 years! Its a cute little ball shaped Japanese
unit, which uses four LD8051 VFD tubes. The symptom is that two of the
digits have become very bright and the other two are very dim. The
cause? Each tube h
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