Having these tubes you may look at the smartsockets group at yahoo. They
are working on some nice electronics to drive them.
Marcin
On 09/10/2010 19:38, Shane Ellis wrote:
Thank you so much. These vfds, are another animal entirely. Lots to
learn now.
Shane
On Oct 7, 2010 11:55 PM, "Adam Jacobs" <[email protected]
<mailto:[email protected]>> wrote:
> Hi Shane,
> The IV-17 is a VFD (Vacuum Fluorescent Display). It is not a Nixie. Don't
> put 180v+ through any part of it! :D
> If there is a way to search through the old group archives, you will find
> many a beautiful and florid prose about how to drive VFD's. Here's
the 5cent
> version:
> 2 of those pins are for the Filament. You will want to run 2.4v between
> these pins. Ideally AC, but DC is ok on tubes this small (there will
be some
> brightness gradient, but not that noticeable). There is another
special pin,
> the "Grid" pin. VFD's are triodes, so you will need to apply 25-30vdc
> (direct) or 50-70v (multiplexed/pulsed) in order for the tube to turn
"on".
> The rest of the pins will be for segments. You have a 16 segment
tube, you
> will find that if you apply the same voltage as for the grid onto a
segment,
> it will light. Tada, you have now lit up your VFD. My favorite IC for
> driving them is the MAX6921, MAXIM-IC will happily send you a tube of
them
> as samples. Sadly, there is no DIP package for that IC, but you can
get SOIC
> breakout boards from sparkfun or wherever. Alternately, there are DIP
> sockets for TQFP package.
> Attached is a link to the VFD clock project I designed a while back (with
> bits cribbed from many giants).
> http://www.jacobstribe.org/files/6-digit-VFD.zip
>
> -Adam
>
> On Thu, Oct 7, 2010 at 9:23 PM, Shane Ellis <[email protected]
<mailto:[email protected]>> wrote:
>
>> So I bought a dozen IV-17 tubes from ebay, and was wondering: How the
>> heck do you use there!? There must be 17 pins on these, how does one
>> connect, and operate one of these. Can anyone recommend a good clock,
>> or schematic or resource to use and learn about these tubes. I'd hate
>> to run 180v+ through these if they take 9V+!
>>
>> Thanks
>> Shane
>>
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