I hadn't seen that paper before. Nice find. There are several power supplies that will give you 150V, seatch for adjustable nixie power supplies. But as the paper says, this is a current-driven device, so as long as you limit the current through each tube, you can go higher. If you go higher, you will need to increase the value of the current-limiting resistor to keep the current the same.
The limit for 18 tubes is the power. Your power supply needs to be able to provide 150*.012*18 (i.e. 33) watts without collapsing. Or you could use multiple power supplies, each powering a group of tubes. On Wednesday, March 21, 2018 at 3:52:45 PM UTC-4, Mikołaj Walkowiak wrote: > > Hello everyone! I'm doing project for college and I've decided to make an > audio visualiser using IN-9's. The problem is I don't have any idea how to > power them. I'd like to have 18 tubes for different sound frequenties and > I'll be using stm34 to calculate the value each tube should show.. > > Now, I know I need 140v and 0 - ~~12 mA for 1 tube but that's all I know > honestly. I think I'll use something like the 0-offset driver found in > HERE <https://www.die-wuestens.de/rd/IN9-2.pdf> controled by PWM of my uC > but I honestly have no idea how to power them. Is 140V(or 150V? everywhere > except there it says 140V) enough even for 18 tubes? If yes is it possible > to make this kind of supply myself as I can't find anything reasonable > price-wise with 140V. Do I need to consider anything else? > -- 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/7d9bc424-a0ca-48a6-ac25-9830f736a88a%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
