A101 Dekatron - Mechanical Drawing

[Smiffy]

Does anyone have a mechanical drawing for the A101 or, better, still, the socket?

I'm thinking of making up some bases to work with Molex sockets by laminating about three different layers of laser cut (by Ponoko) acrylic. Would rather work from a drawing, if one exists, than reverse-engineer with calipers!

(And, yes, I will open source the SVG code.)

[kay486]

Would this help? http://www.tube-tester.com/sites/nixie/datdekat/A101/A101.htm Just scroll at the bottom of the page.

[John Rehwinkel]

> Would this help? http://www.tube-tester.com/sites/nixie/datdekat/A101/A101.htm Just scroll at the bottom of the page.

I imagine that's what he needs. I should get my laser cutter working again so I can do stuff like that too.

Note: the nutty angles in the drawing are simply 360 degrees divided by 11 equally-spaced pins.

- John

[Smiffy]

On Saturday, March 2, 2013 7:30:45 AM UTC+10:30, kay486 wrote:

Would this help? http://www.tube-tester.com/sites/nixie/datdekat/A101/A101.htm Just scroll at the bottom of the page.

*headdesk*  I was actually looking at that page earlier on - no idea how I missed it!

Thanks. Looks like time to do some polar to rectangular calculations.

[John Rehwinkel]

> Thanks. Looks like time to do some polar to rectangular calculations.

X = 27 * cos((pinno + 0.5) * (360.0 / 11))
Y = 27 * sin((pinno + 0.5) * (360.0 / 11))

Or:

radius = 27
incr = 360.0/11

for each pin:

theta = (pinno + 0.5) * incr

X = radius * cos(theta)
Y = radius * sin(theta)

- Cheers,
John

[Smiffy]

On Saturday, March 2, 2013 7:36:48 AM UTC+10:30, jrehwin wrote:

Note: the nutty angles in the drawing are simply 360 degrees divided by 11 equally-spaced pins.

Thank you for saving wear and tear on my calculator :-) Can't believe they used degrees and minutes rather than decimal degrees. 

[David Forbes]

On 3/1/13 2:08 PM, Smiffy wrote:
>
> Thanks. Looks like time to do some polar to rectangular calculations.
>

An Excel spreadsheet will make short work of that task.


--
David Forbes, Tucson AZ

[Tidak Ada]

Should be wise, that's 40 Deg. between the pins ! But Can you feed that in a CNC-machine or lasercutter ?

 

eric

---

From: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] On Behalf Of Smiffy
Sent: vrijdag 1 maart 2013 22:14
To: neoni...@googlegroups.com
Subject: Re: [neonixie-l] Re: A101 Dekatron - Mechanical Drawing

On Saturday, March 2, 2013 7:36:48 AM UTC+10:30, jrehwin wrote:

Note: the nutty angles in the drawing are simply 360 degrees divided by 11 equally-spaced pins.

Thank you for saving wear and tear on my calculator :-) Can't believe they used degrees and minutes rather than decimal degrees. 

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[Tidak Ada]

If you do, please let me know. I need some sockets for EZ10B 's Also a
circle with 11 pins, but extended with 3 pins inside that circle....

eric

-----Original Message-----
From: neoni...@googlegroups.com [mailto:neoni...@googlegroups.com] On
Behalf Of John Rehwinkel
Sent: vrijdag 1 maart 2013 22:07
To: neoni...@googlegroups.com
Subject: Re: [neonixie-l] Re: A101 Dekatron - Mechanical Drawing

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[Quixotic Nixotic]

On 1 Mar 2013, at 21:06, John Rehwinkel wrote:

>> Note: the nutty angles in the drawing are simply 360 degrees
>> divided by 11 equally-spaced pins.

Sockulator will make short shrift of that surely? You can make eagle
or osmond parts from that, depending on the version. Google Sockulator.

Making a pdf or eps file from the result is trivial for me on a Mac.
Or iges, dxf, obj, whatever.

John S

[Smiffy]

On Saturday, March 2, 2013 8:00:43 AM UTC+10:30, Tidak Ada wrote:

If you do, please let me know. I need some sockets for EZ10B 's Also a
circle with 11 pins, but extended with 3 pins inside that circle....

I use the Ponoko laser cutting service; their software accepts SVG, which is really easy to generate with just a little bit of programming.

I think I'll probably knock together a bit of JavaScript to do this, so that number of pins, pitch circle diameter, centre pin/hole, whether there is a key, offset from key, etcetera, can be entered and a snippet of SVG created.

For what I was thinking, I'll need to do different sized holes for the various layers so that the pins can actually be retained, rather than being loose in the shell.

Trickiest bit will be figuring out how to do the key. I could be lazy and just do a circle, then do an up, across, down path but, as a purist, I'd rather do it as a single path.

Doing a separate set of holes for your inner pins, well, I guess you could just have two sets of pins with different PCDs. Whilst you'd get two lots of holes all the way around in the initial SVG, these could be edited out before sending for cutting.

Be cool to add something like this to the suite of in-browser SVG shape generators I'm working on: http://www.smiffysplace.com/shapes.html  

[Frank Bemelman]

Works great for circles of 440 degrees.

[threeneurons]

An A101 has 13 pins, not 11, so its 360/13 = 27.692 degrees between pins. 27D, 41', 32".

1-K0, 2-K9, 3-K8, 4-K7, 5-G1, 6-K6, 7-K5, 8-Anode, 9-K4, 10-G2, 11-K3, 12-K2, 13-K1.

This is a dekatron. Look at the datasheet more closely.

[threeneurons]

Just checked. Dieter posted the wrong drawing on his page. The pin circle is 25mm, not 27mm. The key diameter is 14mm, and 1,75mm at the alignment bump (between pins 1 & 13). The bump itself is 1,8mm. And, as mentioned before 13 pins, not 11.

[threeneurons]

 The key diameter is 14mm, and 1,75mm at the alignment bump.

14mm & 15,75mm.