I'd like10 tubes please.
On Wed, Mar 8, 2023 at 2:20 AM 'Gelu Burla' via neonixie-l <
neonixie-l@googlegroups.com> wrote:
> Hi,
>
> I'm interested to buy a kit that use this kind of Numitron tube / if I get
> it I'll buy the tubes, too.
>
> Regards,
>
> Gelu
> On Tuesday, March 7, 2023, 04:25:28
I have a couple of unpopulated display boards from an HP-5890 [I think] GC
plus the custom VFDs and driver chips that migrated into my collection when
I worked at the factory. If anyone would be interested before I chuck 'em,
let me know.
...R
--
You received this message because you are
Gregebert,
I've not heard these tubes at all. I was initially running them at 100Hz,
then changed to 400Hz for a while before settling at 1600Hz.
I've got half a dozen prototypes running for several months, so if they
were going to make noise I would have heard them by now.
Neat idea on
I agree with Bill. I like a low part count.. the lower the part count the
greater the ultimate reliability.
The diode drop is a good idea and is what I used along with PWM of high
power '595 shift registers. I thought about adding a separate DC-DC
converter for just the tubes.. but that would
Hi,
I'm interested to buy a kit that use this kind of Numitron tube / if I get it
I'll buy the tubes, too.
Regards,
Gelu
On Tuesday, March 7, 2023, 04:25:28 PM GMT+2, Richard Scales
wrote:
If anyone is interested I do have a solution for driving these, please send me
a PM. -
This RCA datasheet shows their simple voltage regulator on page 6 for
brightness control and it also shows the multiplex design with diodes.
https://www.one-electron.com/Archives/RCA/RCA-AppNotes/RCA%201971%20AN-4277%20Description%20and%20Application%20of%20NUMITRON%20Devices.pdf
/Martin
On
If you send me the schematic (with any modifications you may want) and
preferred board size and shape, I can create board files for you.
Bill v
From: neonixie-l@googlegroups.com On Behalf Of
Nicholas Stock
Sent: Tuesday, March 07, 2023 10:57 AM
To: neonixie-l@googlegroups.com
Subject:
Not as easy as that sounds.
If you want to use software (I presume PWM) you cant use a 4511 anymore since
their greatest advantage (besides the BCD to 7 segment decoding) is its latch
function. No way to implement any software based dimming. This would require a
very drastic hardware
That's the one. Thanks Martin. I've spoken to Richard about getting more
PCBs made (I have some MM5314's that need a good home) but he can't locate
the board files.
On Tue, Mar 7, 2023 at 7:54 AM Dekatron42 wrote:
> A quick Googling of MM5314N and Numitron finds this webpage:
>
A quick Googling of MM5314N and Numitron finds this webpage:
http://www.tuberadios.com/numitron/ with schematic that is said to be
compliments of Westdave.
/Martin
On Tuesday, 7 March 2023 at 16:41:24 UTC+1 Nicholas Stock wrote:
> If I'm not mistaken, the clock kit that Martin is referring to
If I'm not mistaken, the clock kit that Martin is referring to is this one..
http://rrsignal.com/projects.htm
I have the schematic at home somewhere and will dig it out. There is a
dimming mod using a transistor/pot that works quite nicely. Mine has been
running for about 8 years now with no
There are two ways to solve this problem.
1. Software, but as the author of the topic, there is no software and the
possibility of editing it (I
I think so), then method number 2 remains.
2. The 4511 chip has a wide power supply range from 3-16 volts. Put the
power regulator and turn it up to
Martin,
How did you do that? (schematic)
Problem with a pot (or any resistor) is that you would need one for each
element (7 per tube) since you cannot put one in the common line. Each filament
draws about 22mA, so depending on the number displayed, the current would be
anywhere between
If anyone is interested I do have a solution for driving these, please send
me a PM.
- Richard
On Tuesday, 7 March 2023 at 12:25:20 UTC Mattelec wrote:
> I would be in for 10 tubes!
>
> El martes, 7 de marzo de 2023 a las 9:58:33 UTC+1, Michail Wilson escribió:
>
>> I don’t think so.
>>
>>
Under "normal" circumstances, I agree that individual current regulators
add a lot of circuitry. The reality is that most tubes are no longer
manufactured, so their numbers are dwindling as the price increases,
essentially irreplaceable. You wouldn't believe the lengths I went towards
I would be in for 10 tubes!
El martes, 7 de marzo de 2023 a las 9:58:33 UTC+1, Michail Wilson escribió:
> I don’t think so.
>
> What is the socket used for these tubes?
>
> Sent from Space
>
> On Mar 7, 2023, at 12:54 AM, Alan Tan wrote:
>
>
>
> Is there a readily available kit for these
I don’t think so.
What is the socket used for these tubes?
Sent from Space
On Mar 7, 2023, at 12:54 AM, Alan Tan wrote:
Is there a readily available kit for these tubes? I'll grab some if there is.
On Tue, Mar 7, 2023 at 10:32 AM Olivier
mailto:lestee...@gmail.com>> wrote:
Hi Nick,
Count
Is there a readily available kit for these tubes? I'll grab some if there
is.
On Tue, Mar 7, 2023 at 10:32 AM Olivier wrote:
> Hi Nick,
>
> Count me in for 15 please.
>
> Cheers,
> Olivier
>
> On Tuesday, 7 March 2023 at 6:22:19 am UTC+8 Nicholas Stock wrote:
>
>> Folks, we have secured 500
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