Re: [neonixie-l] NIMO

2020-10-01 Thread gregebert 
Filaments are about 1.1V; you want to limit the current to 200mA max. 180mA 
is quite good and will prolong the filament lifetime.
The anode is typically 1850V, at 30uA.

The anode current determines the brightness, which is the 'wear-and-tear' 
on the phosphor. So, keeping the anode current on the lower side so that 
the tube is still readable is essential.

Lastly, the 10 individual grids control the numbers displayed. When a grid 
is negative with respect to the filament, say -3.5V or more negative, that 
character is extinguished.
When the grid is positive with respect to the filament, that digit will be 
displayed. The brightness of the digit can be controlled by adjusting the 
anode voltage, or by adjusting how positive the grid is relative to the 
filament.

In my NIMO clock, I have a DAC to set the offset voltage between the 
filaments and the grid logic. The grids are driven from CMOS shift 
registers on a 10V supply. The HV supply is also software-programmable.

On Thursday, October 1, 2020 at 8:01:15 PM UTC-7 martin martin wrote:

> Just curious, what's the filament voltage?  27VDC?  And what's the HV?
>
>
>
>
> ~
> *mcve...@gmail.com*
>
>
> On Thu, Oct 1, 2020 at 5:24 PM Paul Andrews  wrote:
>
>> Yes, they do look very nice.
>>
>> On Oct 1, 2020, at 4:44 PM, jörg  wrote:
>>
>> Short update of my nimo project.
>> I've got 5 tubes running. The sixt is unfortunately DOA.
>> The tubes filaments are driven with three power supplies, with soft start 
>> IC (load switch).
>> So the filament gets started very smooth.
>> I've made some experiments with multiplexing the tubes. 
>> Which work nice, using the method described in the manual. The bias 
>> voltage is changed for every tube, that should be on/off.
>> In the actual approch, I'm using direct driving the tubes via 74HC595 
>> shift registers. Got a plenty of problems at the beginning.
>> The power and signal lines for the 595 were messed with switching noise. 
>> Some caps did the trick.
>> Really nice to view the working tubes.
>>
>> Video: https://www.youtube.com/watch?v=JbwfZhYhnlo
>>
>> jörg schrieb am Mittwoch, 15. Juli 2020 um 18:01:18 UTC+2:
>>
>>> I‘m using Eagle to layout. 
>>> It takes time for me to feel comfortable with it. 
>>> And Fusion360. 
>>>
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Re: [neonixie-l] NIMO

2020-10-01 Thread martin martin 
Just curious, what's the filament voltage?  27VDC?  And what's the HV?




~
*mcvei...@gmail.com *


On Thu, Oct 1, 2020 at 5:24 PM Paul Andrews  wrote:

> Yes, they do look very nice.
>
> On Oct 1, 2020, at 4:44 PM, jörg  wrote:
>
> Short update of my nimo project.
> I've got 5 tubes running. The sixt is unfortunately DOA.
> The tubes filaments are driven with three power supplies, with soft start
> IC (load switch).
> So the filament gets started very smooth.
> I've made some experiments with multiplexing the tubes.
> Which work nice, using the method described in the manual. The bias
> voltage is changed for every tube, that should be on/off.
> In the actual approch, I'm using direct driving the tubes via 74HC595
> shift registers. Got a plenty of problems at the beginning.
> The power and signal lines for the 595 were messed with switching noise.
> Some caps did the trick.
> Really nice to view the working tubes.
>
> Video: https://www.youtube.com/watch?v=JbwfZhYhnlo
>
> jörg schrieb am Mittwoch, 15. Juli 2020 um 18:01:18 UTC+2:
>
>> I‘m using Eagle to layout.
>> It takes time for me to feel comfortable with it.
>> And Fusion360.
>>
>> --
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> 
> .
> 
> 
> 
> 
> 
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RE: [neonixie-l] New assembly YouTube videos for Zeyuan's IV11 and IV18 clocks

2020-10-01 Thread Michail Wilson 
I think most of us have bought the power supplies.
Me?  I’ve bought over 100 from you through a couple of ebay accounts.  In fact, 
15 more yesterday.

Glad to see you here.

The kits are a little expensive for me.  I couldn’t find kits without tubes. (I 
think most of us here would consider buying if tubeless kits existed.)

As for the videos, I think they’re great.

PS.  I love the part of the video on the first one when you plug in the USB 
adapter to an extension cord with the ground pin broke off.   Looks just like 
my setup.   

Michail

From: neonixie-l@googlegroups.com  On Behalf Of 
Aiden Fang
Sent: Thursday, October 1, 2020 5:45 PM
To: neonixie-l 
Subject: [neonixie-l] New assembly YouTube videos for Zeyuan's IV11 and IV18 
clocks

Hello, everyone.

Aiden here from the SF Bay Area. This is my first post here so forgive me if 
you see anything inappropriate ;) I guess some of you know me already, esp. if 
you ever contact the "customer support" of our website. I am the support guy 
(all-in-one role, you know).

I'm a big nixie fan like your guys. Also I'm a close friend and business 
partner of Zeyuan Yan, who is the designer of the NCH and Omnixie clocks.

Recently I started making videos for Zeyuan's clock series. I started with the 
popular IV-11 clock kit, and then the IV18, so Called energy pillar.

The step-by-step assembly video for IV11 VFD clock. (Part 01)
https://www.youtube.com/watch?v=3XnFwC8ago0

The step-by-step assembly video for IV18 VFD clock
https://www.youtube.com/watch?v=TAtsxeMKK48

I am still learning how to make better videos, so any suggestions are greatly 
appreciated and welcome.
Also we would really appreciate it if you can subscribe to the channel ^_^

Wish you all the best.

Aiden

omnixie.com



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[neonixie-l] New assembly YouTube videos for Zeyuan's IV11 and IV18 clocks

2020-10-01 Thread Aiden Fang 
Hello, everyone.

Aiden here from the SF Bay Area. This is my first post here so forgive me 
if you see anything inappropriate ;) I guess some of you know me already, 
esp. if you ever contact the "customer support" of our website. I am the 
support guy (all-in-one role, you know).

I'm a big nixie fan like your guys. Also I'm a close friend and business 
partner of Zeyuan Yan, who is the designer of the NCH and Omnixie clocks.

Recently I started making videos for Zeyuan's clock series. I started with 
the popular IV-11 clock kit, and then the IV18, so Called energy pillar.

The step-by-step assembly video for IV11 VFD clock. (Part 01)
https://www.youtube.com/watch?v=3XnFwC8ago0

The step-by-step assembly video for IV18 VFD clock
https://www.youtube.com/watch?v=TAtsxeMKK48

I am still learning how to make better videos, so any suggestions are 
greatly appreciated and welcome. 
Also we would really appreciate it if you can subscribe to the channel ^_^ 

Wish you all the best. 

Aiden

omnixie.com



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Re: [neonixie-l] NIMO

2020-10-01 Thread Paul Andrews 
Yes, they do look very nice.

> On Oct 1, 2020, at 4:44 PM, jörg  wrote:
> 
> Short update of my nimo project.
> I've got 5 tubes running. The sixt is unfortunately DOA.
> The tubes filaments are driven with three power supplies, with soft start IC 
> (load switch).
> So the filament gets started very smooth.
> I've made some experiments with multiplexing the tubes. 
> Which work nice, using the method described in the manual. The bias voltage 
> is changed for every tube, that should be on/off.
> In the actual approch, I'm using direct driving the tubes via 74HC595 shift 
> registers. Got a plenty of problems at the beginning.
> The power and signal lines for the 595 were messed with switching noise. Some 
> caps did the trick.
> Really nice to view the working tubes.
> 
> Video: https://www.youtube.com/watch?v=JbwfZhYhnlo
> 
> jörg schrieb am Mittwoch, 15. Juli 2020 um 18:01:18 UTC+2:
>> I‘m using Eagle to layout. 
>> It takes time for me to feel comfortable with it. 
>> And Fusion360. 
>> 
> 
> -- 
> You received this message because you are subscribed to a topic in the Google 
> Groups "neonixie-l" group.
> To unsubscribe from this topic, visit 
> https://groups.google.com/d/topic/neonixie-l/nwics2gzVKE/unsubscribe.
> To unsubscribe from this group and all its topics, send an email to 
> neonixie-l+unsubscr...@googlegroups.com.
> To view this discussion on the web, visit 
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> 
> 
> 
> 
> 

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