> > Thanks a LOT Anne! I'm finally understanding that it's sort of like an > LED! To test if I understand it properly, would I be correct if I simply > connect the nixies to 180v and use a BJT current limiter to limit the > current to 2mA >
Yes, I would recommend that. Make sure your NPN is rated for at least 200V, and I would recommend even more. The Icbo rating is important, because if the transistor has high enough leakage, you will have glowing cathodes. I would recommend Icbo of less than 1uA. My watch uses a PMBTA42DS dual NPN device, which is rated at 300V and has 100nA Icbo. For the base-drive, if you are running from 3.3V, then to obtain 2mA, you would use an emitter-resistor of (3.3-0.7)/0.002 = 1300 ohms. -- 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/0bae8160-92fe-47ea-ad76-80845141af53%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
