My power calculation is wrong! Not all that voltage drops across the resistor, so I think it is more like 10 watts - I new I should have taken more time!
On Wednesday, March 21, 2018 at 4:21:48 PM UTC-4, Paul Andrews wrote: > > 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/6b77698f-adea-40c1-92c7-11560d32aa24%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
