On Tuesday, August 18, 2015 at 4:06:18 PM UTC-4, Hugh Pryor wrote: > > I guess I have a steep learning curve in front of me - which is exactly > why I want to do this. > > If you can point me in the right direction that would be brilliant! >
I believe the IV-25 are like the IV-26 and don't have a control grid. That means you can't multiplex the tubes but need a driver for each dot (instead of having 7 dot drivers and a driver for each tube's grid). That makes constructing large displays out of these tubes rather unwieldy. The main use for the IV-26 tubes, the Elektronika 7 series of clocks, "cheated" by tying some dots together and leaving other dots unconnected as they would never be lit on the clock. If you decide to move up to the larger IV-26 tubes, be aware that there are 3 types. Type 1 has all of the individual dots brought out separately. Type 2 is for a horizontal group of 12 (or 11) tubes, while Type 3 is for a vertical group of 4 tubes. Types 2 and 3 have dots tied together inside the tube. The brightness curve for the IV-26 is somewhat unsatisfactory - the dots don't illuminate evenly until 100 hours or so of operation, and after a few thousand hours they start to fade. I don't know if the IV-25 behaves the same way, but before you start thinking there might be a problem with your design, let the tubes stabilize for a while. Just about everything you might want to know about the IV-26 / Elektronika can be found on my blog: https://www.tmk.com/blog/?s=elektronika -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To unsubscribe from this group and stop receiving emails from it, send an email to neonixie-l+unsubscr...@googlegroups.com. To post to this group, send an email to neonixie-l@googlegroups.com. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/7a417b90-c689-4f49-8e1a-9d4a01716ed8%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
