That Nimo document, I actually spliced together into a PDF, from separate JPG pages on David Forbe's page: http://www.cathodecorner.com/nixiedata/ I updated IEE contact information, and put David's & my "thumbprints", on it, so you can see how it bounced thru the internet.
The only Nimo's I've ever seen are the ones Westdave & I have. These A.J. Franzman stumbled upon, at C&H Surplus (Pasadena, CA) many years ago. He bought the lot, which wasn't that many. Westdave acquired some from him, and gave me two. We'd been sitting on them, til the Fan Blanche youtube video popped up, last October: https://www.youtube.com/results?search_query=iee+nimo They aren't the prettiest tubes, and you have to wonder what was IEE thinking ! They seem structurally complex. Much more complex, than a nixie. Interface, on the other hand is pretty simple. The HV (1800V +) on the anode is applied, and not manipulated. It only draws ~30uA. The filament/cathode passes 200mA, at 1.1V AC or DC. Digit manipulation, is all done thru the 10 grids. -4V (relative to the cathode), for full cutoff. This is where all the grids are "parked". Only the active digit's grid is brought positive, thru a fairly large resistor (330K minimum). Like all vacuum tube grids, it starts to conduct when it gets slightly positive. With the large resistor, the actual grid voltage just barely rises above the cathode level. Any cheap low voltage transistor, or simple 4000 CMOS device can drive it. My one digit nimo clock uses only common 2N3906 PNP transistors. On Wednesday, April 25, 2018 at 6:48:32 AM UTC-7, GastonP wrote: > > Thanks for bringing back the Nimo specifications, Mike. > Did anyone ever see the "4 decade" ones, or even the blue and red phosphor > models? > The "6 decade" didn't even have a part number so it probably was in the > product line roadmap but never made it. > > Gastón > >> >> -- 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 [email protected]. To post to this group, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/f55e5dd4-5e1f-4caa-b50b-5c3e2623d426%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
