Re: [neonixie-l] Re: Nixie driver problem when going over 170 VDC

2013-05-15 Thread nix
Hi All,
thanks all for this valuable comments. I see now that I should have 
studiedt more before creating the PCB. I really thought its just wiring the 
things together!

I see that the arduinix layout is much cleaner, but does it fullfill all 
the arguments from Alex?

I will take all this input in my version 2.

Many thanks again

Sergio

On Wednesday, 15 May 2013 02:21:38 UTC+2, nixiebunny wrote:

 Sergio, 

 I see the problem. 

 As others have said, your PC board layout may be correct for your net 
 list, but it is completely wrong for a switching power supply. 

 The Nixie power supply design by Nick DeSmith is a good one. Copy it 
 exactly. 

 When doing a PC board layout, the first thing to do is to move around 
 all the parts so that the connecting lines are as short as possible. 
 This takes a lot of time. I will typically spend a day moving the parts 
 around to get a nice placement. After I do that, then the wiring part of 
 the job only takes an hour. 

 Also, be sure to use heavy traces for power. Those bypass capacitors 
 next to the ICs are essential too. 

 A PC board layout that looks pretty is more likely to work well than one 
 with the traces spread nilly-willy all over the board. 


  
 https://lh4.googleusercontent.com/-PsF8r0jvHEQ/UZDN7eiidtI/BH4/x_mkJRi4IPU/s1600/nixieclock_v1.1_Leiterplatte.jpg
  

  


 -- 
 David Forbes, Tucson AZ 



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Re: [neonixie-l] Re: Nixie driver problem when going over 170 VDC

2013-05-15 Thread Jens Grabner

I have an other scematic,

simulatet and it works in hardware.
http://threeneurons.wordpress.com/nixie-power-supply/

Jens

Am 15.05.2013 08:47, schrieb nix:

Hi All,
thanks all for this valuable comments. I see now that I should have 
studiedt more before creating the PCB. I really thought its just 
wiring the things together!


I see that the arduinix layout is much cleaner, but does it fullfill 
all the arguments from Alex?


I will take all this input in my version 2.

Many thanks again

Sergio

On Wednesday, 15 May 2013 02:21:38 UTC+2, nixiebunny wrote:

Sergio,

I see the problem.

As others have said, your PC board layout may be correct for your net
list, but it is completely wrong for a switching power supply.

The Nixie power supply design by Nick DeSmith is a good one. Copy it
exactly.

When doing a PC board layout, the first thing to do is to move around
all the parts so that the connecting lines are as short as possible.
This takes a lot of time. I will typically spend a day moving the
parts
around to get a nice placement. After I do that, then the wiring
part of
the job only takes an hour.

Also, be sure to use heavy traces for power. Those bypass capacitors
next to the ICs are essential too.

A PC board layout that looks pretty is more likely to work well
than one
with the traces spread nilly-willy all over the board.




https://lh4.googleusercontent.com/-PsF8r0jvHEQ/UZDN7eiidtI/BH4/x_mkJRi4IPU/s1600/nixieclock_v1.1_Leiterplatte.jpg

https://lh4.googleusercontent.com/-PsF8r0jvHEQ/UZDN7eiidtI/BH4/x_mkJRi4IPU/s1600/nixieclock_v1.1_Leiterplatte.jpg




-- 
David Forbes, Tucson AZ


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attachment: MC34063_180V.png

[neonixie-l] Numitrons spotted?

2013-05-15 Thread AlexTsekenis
Somewhere around the 38 sec mark, but it lasts for 0.2 sec or less so don't 
blink!
Numitrons?

http://www.youtube.com/watch?v=b5xhPAundL4

Alex.

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[neonixie-l] Steampunk Spinner on eBay

2013-05-15 Thread threeneurons

Interesting to see if it goes anywhere:
http://www.ebay.com/itm/140976925149

It's not my listing, and I'd say I have nothing to do with it, but I 
suspect I sold him the spinner kit, its based on.

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Re: [neonixie-l] Numitrons spotted?

2013-05-15 Thread David Forbes

On 5/15/2013 12:05 PM, AlexTsekenis wrote:

Somewhere around the 38 sec mark, but it lasts for 0.2 sec or less so don't
blink!
Numitrons?

http://www.youtube.com/watch?v=b5xhPAundL4

Alex.



Yes, Numitrons.

In the USA, we had Panaplex displays in our gas pumps for many years. I spotted 
a couple the other day in a derelict station on a winding mountain road. I 
didn't pull over to extract them, though I imagine I could have.


--
David Forbes, Tucson, AZ

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[neonixie-l] Re: Numitrons spotted?

2013-05-15 Thread threeneurons


On Wednesday, May 15, 2013 12:05:13 PM UTC-7, AlexTsekenis wrote:

 Somewhere around the 38 sec mark, but it lasts for 0.2 sec or less so 
 don't blink!
 Numitrons?

 http://www.youtube.com/watch?v=b5xhPAundL4

 Alex.


I caught a glimpse of it. Had to replay that part a couple of times. 0.2sec 
might be generous. It looks to be on the fuel pump. I vaguely remember 
numitrons on gas pumps. I definitely remember 7-segment neon panaplex-like 
displays being used. They had those at the gas station I regularly used, 
for a couple of years. But that would be back in the 80's.

At least I learned something, by watching the rest of the video. Mixing 
diesel with gasoline, isn't quite the disaster its always made out to be.
 

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Re: [neonixie-l] Steampunk Spinner on eBay

2013-05-15 Thread Michail1
And that is why I had to bid on it.  :)
 
 
In a message dated 5/15/2013 12:54:58 P.M. Pacific Daylight Time,  
threeneur...@yahoo.com writes:



Interesting to see if it goes anywhere:
http://www.ebay.com/itm/140976925149


It's not my listing, and I'd say I have nothing to do with it, but I  
suspect I sold him the spinner kit, its based  on.

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[neonixie-l] Re: Steampunk Spinner on eBay

2013-05-15 Thread dr pepper
Looks like an OG3

On 15 May, 21:28, micha...@aol.com wrote:
 And that is why I had to bid on it.  :)

 In a message dated 5/15/2013 12:54:58 P.M. Pacific Daylight Time,

 threeneur...@yahoo.com writes:

 Interesting to see if it goes anywhere:http://www.ebay.com/itm/140976925149

 It's not my listing, and I'd say I have nothing to do with it, but I
 suspect I sold him the spinner kit, its based  on.

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[neonixie-l] Re: Numitrons spotted?

2013-05-15 Thread dr pepper
Theres a station out in the country not far from here that has the
same pumps, they are made by gilbarco, and there are still some pumps
with nixies in in this country.
Magnetic flip 7 segments still sem to be the norm here, lcd's are
creeping in slowly.

On 15 May, 21:02, threeneurons threeneur...@yahoo.com wrote:
 On Wednesday, May 15, 2013 12:05:13 PM UTC-7, AlexTsekenis wrote:

  Somewhere around the 38 sec mark, but it lasts for 0.2 sec or less so
  don't blink!
  Numitrons?

 http://www.youtube.com/watch?v=b5xhPAundL4

  Alex.

 I caught a glimpse of it. Had to replay that part a couple of times. 0.2sec
 might be generous. It looks to be on the fuel pump. I vaguely remember
 numitrons on gas pumps. I definitely remember 7-segment neon panaplex-like
 displays being used. They had those at the gas station I regularly used,
 for a couple of years. But that would be back in the 80's.

 At least I learned something, by watching the rest of the video. Mixing
 diesel with gasoline, isn't quite the disaster its always made out to be.

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