Many manufacturers write that you will have to contact them for the special curves you need when you are going to multiplex their Nixies since they do not usually print that information in the databooks.
These sheets show you that the Nixie will have an increased turn-on voltage corresponding to the increased current when run in switched mode. This is the same as when a neon voltage stabilizer tube is used, the voltage increases somewhat when the current increases, you can check the OB2 voltage regulator tube for instance. The curves for most Nixies when used in multiplexed mode are not linear so if you can't find those curves you'll have to make the measurements yourself and take into account the spread between different Nixies to draw the curve. Some of these special curves have a voltage span of approximately 10-30V for a certain current through the Nixie, so there is an upper and a lower limit for the turn-on voltage corresponding to the current used. This book: http://www.oldtimeradio.de/BU7908.php "Electronica 171 - Elektronische Anzeigebauelemente" by Winfired Müller contains a few of these curves for the ZM-series of Nixies. /Martin On 16 mar, 00:55, Cobra007 <mic...@xiac.com> wrote: > Yes, I think I mentioned "slightly" increase rather than a mayor > increase. > > I have measure this on another nixie tube and came to the following > voltages: > 0.5mA : 120V > 1.0mA : 125V > 1.5mA: 130V > 2.0mA: 133V > 3.0mA: 140V > 4.5mA: 150V > > His tube current will increase from 2mA to about 7.5mA, so according > to the above measurements, the increase in tube voltage will be > playing a role. > > Michel > > On Mar 16, 10:06 am, Charles MacDonald <cm...@zeusprune.ca> wrote: > > > > > On 12-03-15 05:46 AM, Cobra007 wrote: > > > > So it looks like your resistor is correct. The only thing is that the > > > voltage across the tube will slightly increase due to the higher > > > current, so it's not 100% correct but pretty much. > > > Since we are talking a Neon device, the voltage across the tube will try > > to stay the same, with the current adjusting if needed. That is why > > Neon bulbs were used as Voltage reference devices in days of Old. > > > -- > > Charles MacDonald Stittsville Ontario > > cm...@zeusprune.ca Just Beyond the > > Fringehttp://users.trytel.com/~cmacd/tubes.html > > No Microsoft Products were used in sending this e-mail. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to neonixie-l@googlegroups.com. To unsubscribe from this group, send email to neonixie-l+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
