;> experimented with driving them using a 3.3v regulator.. but at that
>>>>>> voltage
>>>>>> they were a bit dim.
>>>>>>
>>>>>> NOTE: The IV-9 datasheet does mention to avoid running the tubes at a
>>>
dim.
>>>>>
>>>>> NOTE: The IV-9 datasheet does mention to avoid running the tubes at a
>>>>> frequency between 105 and 1000 Hz, presumably to avoid mechanical
>>>>> resonance. I elected to run them at 1600 Hz.
>>>>>
>>>
egments are visible, 2mA they are "barely visible" and at 1mA I noted
>>>> them as not visible. Keeping the unlit segments warm with a slight current
>>>> seems to make the most sense to me. It's all software on my clock so maybe
>>>> an option for the n
, 2023 3:52 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: IV-9 numitron lifespan
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 regi
, 2023 3:52 PM
To: neonixie-l
Subject: Re: [neonixie-l] Re: IV-9 numitron lifespan
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 regi
on my clock so maybe
>>> an option for the next revision.
>>>
>>> That's all I know so far.
>>>
>>> Regards,
>>> -Moses
>>> On Saturday, March 4, 2023 at 5:52:05 AM UTC-8 theold...@gmail.com
>>> wrote:
>>>
>>
der, and according to their data
>>> sheets the max. output at that voltage is 4.1 V, so that is well within
>>> specification for the tube. Yes, I agree, lowering the voltage even further
>>> should increase lifespan.
>>>
>>>
>>>
>>> Bill v
*martin martin
*Sent:* Tuesday, March 07, 2023 9:09 AM
*To:* neoni...@googlegroups.com
*Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
How about this clock I built in the early 80s? 5314 clock chip. I used a
1k pot for dimming. Has been running for many moons now!
~
*mc
om *On Behalf
> Of *Nicholas Stock
> *Sent:* Tuesday, March 07, 2023 10:57 AM
> *To:* neoni...@googlegroups.com
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>
>
> That's the one. Thanks Martin. I've spoken to Richard about getting more
> PCBs ma
: Re: [neonixie-l] Re: IV-9 numitron lifespan
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 mailto:marti
:19 AM
To: neonixie-l
Subject: Re: [neonixie-l] Re: IV-9 numitron lifespan
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
ng on the number displayed. It would result
>>>> in uneven light output. Same reason why you could not use a single current
>>>> regulator pre tube, but one per filament would be needed. A voltage
>>>> regulator (such as a simple diode) does n
rrent
>>> regulator pre tube, but one per filament would be needed. A voltage
>>> regulator (such as a simple diode) does not have that disadvantage.
>>>
>>>
>>>
>>> Bill v
>>>
>>>
>>>
>>> *From:* neon
de) does not have that disadvantage.
>>
>>
>>
>> Bill v
>>
>>
>>
>> *From:* neoni...@googlegroups.com *On Behalf
>> Of *martin martin
>> *Sent:* Tuesday, March 07, 2023 9:09 AM
>> *To:* neoni...@googlegroups.com
>&
ll v
>
>
>
> *From:* neoni...@googlegroups.com *On Behalf
> Of *martin martin
> *Sent:* Tuesday, March 07, 2023 9:09 AM
> *To:* neoni...@googlegroups.com
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>
>
> How about this clock I built in the ear
not
have that disadvantage.
Bill v
From: neonixie-l@googlegroups.com On Behalf Of
martin martin
Sent: Tuesday, March 07, 2023 9:09 AM
To: neonixie-l@googlegroups.com
Subject: Re: [neonixie-l] Re: IV-9 numitron lifespan
How about this clock I built in the early 80s? 5314 clock chip. I
groups.com *On Behalf
> Of *gregebert
> *Sent:* Monday, March 06, 2023 8:13 AM
> *To:* neonixie-l
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>
>
> Very good info, Moses.
>
>
>
> From that, I would target the operating current well-below 20mA t
;>
>>
>>
>>
>>
>>
>>
>> *From:* neoni...@googlegroups.com *On Behalf
>> Of *gregebert
>> *Sent:* Monday, March 06, 2023 8:13 AM
>> *To:* neonixie-l
>> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>>
>&g
gt;
> *From:* neoni...@googlegroups.com *On Behalf
> Of *gregebert
> *Sent:* Monday, March 06, 2023 8:13 AM
> *To:* neonixie-l
> *Subject:* Re: [neonixie-l] Re: IV-9 numitron lifespan
>
>
>
> Very good info, Moses.
>
>
>
> From that, I would target th
not as accurate, but
definitely a whole lot simpler.
From: neonixie-l@googlegroups.com On Behalf Of
gregebert
Sent: Monday, March 06, 2023 8:13 AM
To: neonixie-l
Subject: Re: [neonixie-l] Re: IV-9 numitron lifespan
Very good info, Moses.
>From that, I would target
ithin
>> specification for the tube. Yes, I agree, lowering the voltage even further
>> should increase lifespan.
>>
>>
>>
>> Bill v
>>
>>
>>
>> *From:* neoni...@googlegroups.com *On Behalf
>> Of *Chris
>> *Sent:* Satu
n Behalf
> Of *Chris
> *Sent:* Saturday, March 04, 2023 8:19 AM
> *To:* neonixie-l
> *Subject:* [neonixie-l] Re: IV-9 numitron lifespan
>
>
>
> Hi,
>
> While i am not sure for the IV9 numitrons have a look at the DA2300
> lifetime expectancy,
>
>
>
> Ba
ltage is 4.1 V, so that is well within
> specification for the tube. Yes, I agree, lowering the voltage even further
> should increase lifespan.
>
>
>
> Bill v
>
>
>
> *From:* neoni...@googlegroups.com *On Behalf
> Of *Chris
> *Sent:* Saturday, March 04, 20
@googlegroups.com On Behalf Of
Chris
Sent: Saturday, March 04, 2023 8:19 AM
To: neonixie-l
Subject: [neonixie-l] Re: IV-9 numitron lifespan
Hi,
While i am not sure for the IV9 numitrons have a look at the DA2300 lifetime
expectancy,
<https://www.dos4ever.com/numitron/lifenew.gif>
Bas
Hi,
While i am not sure for the IV9 numitrons have a look at the DA2300
lifetime expectancy,
[image: https://www.dos4ever.com/numitron/lifenew.gif]
Basically reducing the voltage increases the life expectancy exponentially.
So i usually run my numitrons at 4.5V or lower and have had no issues
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