I use my IN-14s at 170V with a 16.5K anode resistor. It uses about 1.7-1.9mA depending on the digit. I'm not sure if this is wise, however-does anyone think this is too low?
I can't advise you on the massive power supply you need, but do you mind explaining why you need so many tubes? It sounds pretty awesome. On Feb 15, 10:28 pm, Jarek <[email protected]> wrote: > After finishing my last nixie tube clock project successfully > (http://www.soniktech.com/nixie.php), I've wanted to try something bigger. > I've started working on the control logic of a 15 digit clock (long > story), but I'm running into a little problem with powering the thing. > I've decided on IN-14 tubes, as they were the cheapest I could get in > that quantity. Previously I've used salvaged Burroughs tubes, which > were amazingly well documented. The docs for IN-14s is a little more > sparse to my knowledge. I've found the following information: > > Anode Voltage: 170V > Current: 2.5mA > > I'm a little confused as to what current limiting resistor I should > use at the anode for each digit. I'm using russian 74141 chips to > drive each tube, so I'm going to use one resistor per tube at the > anode. Previously I've used an allspectrum.com nixie SMPS to do the > job, but from its datasheet I've noticed that it peters out at around > 25mA @ 180V, less than the 37.5mA I need. I've stumbled across > this:http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140426808956#shId. > Would this work for my situation? Also, which resistor should I use at > the anode of each digit? > > Another question, because of space constraints, I'm going to have to > keep the SMPS off-board, probably vertical to the board. The one I > have linked has a 10 pin header, how long can the wires be from the > board to the SMPS? > > Thanks for your help, and I'll post plenty of pictures when it's done > =] > > -Jarek -- 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]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
