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.
