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-   -   Hivac XN11 tubes (http://www.diyaudio.com/forums/tubes-valves/168528-hivac-xn11-tubes.html)

Dagwood 13th June 2010 01:36 PM

Hivac XN11 tubes
 
Hi all

Does any have a datasheet for a Hivac XN11 tube? :confused:

Cheers

Matt BH 13th June 2010 08:10 PM

If you are building a nixie clock like the one on Mikes electric stuff then you dont really need the datasheet. If you look in the tube you can see which pin is the Anode, its the one connected to the honeycomb grid structure. The other pins are 0-9. I used a 47K anode resistor with a 180V B+. I used the small switching supply here:


http://www.kosbo.com/index.php?page=...mart&Itemid=18

you could build one but why bother for the price. It is much safer than the directly connected to the mains setup IMO.

Cheers Matt.

Dagwood 13th June 2010 09:22 PM

Thanks Matt
Yes I am planning to build one from Mike’s electric stuff, I just wanted to know a little more detail about the tube.
I have just built an inverter similar to this one, inspired by the very helpful Dr Andrew Smith

http://www.google.co.uk/imgres?imgurl=http://g4oep.atspace.com/efamp/efamp.2.jpg&imgrefurl=http://g4oep.atspace.com/efamp/efamp.htm&h=588&w=646&sz=35&tbnid=4S6H4DQ-h-vUGM:&tbnh=125&tbnw=137&prev=/images%3Fq%3DEF80&hl=en&usg=__BE08lbR0gN7UTyvGEV03 X-mdHq0=&ei=AFSKS8CiK4380wT6w-nRCw&sa=X&oi=image_result&resnum=7&ct=image&ved=0C CQQ9QEwBg


Nice little project but I might give one from Kosbo a go for the Nixie clock though?

Cheers
Ben

Matt BH 13th June 2010 11:33 PM

2 Attachment(s)
That little switcher board is absolutely perfect:) I have built a few nixie clocks because they make great pressies.

Mikes circuit is ok but I decided to leave out the 4013 as it seemed a waste and just used a simple two transistor buffer to get a nice 50Hz square wave. I also go for a 24Hr display with a leading zero because the 10s of hours nixie doesnt get enough of its cathodes used otherwise and this can lead to poisoning of the non-used cathodes. With the XN11 you will need this because they are wire ended and you cant just swap them around every month or so. This does involve a few mods to the circuit but its pretty logical funnily enough:D

Here are a couple of pics of a pair im building this year for christmas presants. The cases are Eddystone die-cast jobs pollished up and the colon indicators are 10mm test tubes cut with a diamond disk and epoxy glued to the ally with a spring ring from the standard Belling Lee TV aerial connector and standard NE2 bulbs stuffed up em. The driver transistors are soldered directly to the sockets of the Russian IN8 tubes.

kevinkr 14th June 2010 06:19 AM

Cool Matt.. :D

Dagwood 14th June 2010 04:26 PM

Hi Matt

Very nice work, clean and simple.

When you say "10mm test tubes cut with a diamond disk ", how exactly did you go about that???

Very cool anyways.

Ben

Matt BH 18th June 2010 02:33 PM

Hi,
Sorry for not replying but I have been working away all week with no internet.

To cut the small 10mm test tubes I just used a small diamond disk like this:

Diamond Cut Off Disc for Dremel or Drill - 2" / 50mm on eBay (end time 10-Jul-10 18:42:19 BST)

I used it in a pillar drill but a dremel or other drill would do. Just cut a groove around the tube and it should be easy to snap it, wear gloves. You could also use a diamond needle file or normal needle file as long as you dont mind blunting it:)

Cheers Matt.

Matt BH 18th June 2010 07:58 PM

Thanks Kevinkr:D

Dagwood 19th June 2010 08:01 PM

Hivac XN11 tubes
 
Thanks Matt

I think I will give that a go on mine :D as looks very cool and a bit safer as well.

Cheers

fooeywuffle 7th September 2012 06:11 PM

2 Attachment(s)
Why all the bother with those switching supplies. Just wind a transformer for the Nixie Clock, or any other project neeeding one. Making Nixie Clock using GE SCS 3N83s. No ICs.


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