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]> 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]> 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 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "neonixie-l" group. >> To post to this group, send an email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<neonixie-l%[email protected]> <neonixie-l%[email protected]<neonixie-l%[email protected]> > >> . >> For more options, visit this group at >> http://groups.google.com/group/neonixie-l?hl=en-GB. >> >> > > -- > You received this message because you are subscribed to the Google Groups "neonixie-l" group. > To post to this group, send an email to [email protected]. > To unsubscribe from this group, send email to [email protected]<neonixie-l%[email protected]> . > For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB. >
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