I have a few of these boards and have just started to look at how they are wired. Mine had small boards mounted on the back which I have removed.
They are wired as follows: - All Cathodes to ground. - All Anodes to +Volts via a series resistor - Each group of tubes forming segments have the Grid held on a potential divider made up of a 1M and 3M resistor. My understanding is that the thing will need 240V DC (which I am currently researching) and then the Grids can be controlled to light each segment (or not). That's as far as I have got, It seems that generating 240VDC is the hardest part of all this - A transformer with 170V secondary and sufficient VA, Bridge Rectifier and Smoothing cap is the old-school method - which does provide some isolation. Is there a better way? - Richard On Tuesday, 13 October 2020 14:35:39 UTC+1, celzey11 wrote: > > Unfortunately I haven't tried to power it up yet, moving and starting a > new job took all my free time. Unfortunately one of the 4 I received had a > few cracked tubes, but the seller is sending me some IN-28s to replace them > with. Can't wait to see it light up though. > > On Tue, Oct 13, 2020, 9:25 AM Bill Notfaded <[email protected] > <javascript:>> wrote: > >> >> Has anyone tried driving this other version of these vs. the type that >> Paul has? I assume these from Van are all the same. It looks like they >> have some wires connected to a line of pins that plugged into something at >> one point? It looks like there are resistors for each tube on the board >> already. There are 23 tubes on each board. Has anyone figured out the pin >> out on the connector yet? >> On Sunday, August 2, 2020 at 5:58:49 AM UTC-7 celzey11 wrote: >> >>> Tempted to buy a few... >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "neonixie-l" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/neonixie-l/bVoCKhPv7Dg/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected] <javascript:>. >> To view this discussion on the web, visit >> https://groups.google.com/d/msgid/neonixie-l/9b691c02-facc-4498-838b-c25d7cb41d8cn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/neonixie-l/9b691c02-facc-4498-838b-c25d7cb41d8cn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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 view this discussion on the web, visit https://groups.google.com/d/msgid/neonixie-l/d1043136-8aff-4fb4-ab9c-e45e544f95a5o%40googlegroups.com.
