On 8/11/2014 2:46 PM, 'Alaba Baju' via neonixie-l wrote:
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?
It depends on whether you are driving only one tube at a time, or more than one
tube. If you have several tubes on at the same time, then you need anode
resistors to ensure that all tubes get the same current, as the ionizing voltage
will be different for each tube, and different for every cathode in each tube.
If you multiplex the display and drive only one tube at a time, then a current
regulator will work, and there is no anode resistor to waste power.
I do that with my Nixie tube watch. you can see the schematic diagram here:
http://www.cathodecorner.com/nixiewatch/firmware/nwrf-schem.gif
The 150 ohm resistor R8 senses the current through the tube and adjusts the
feedback signal VFB accordingly.
--
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/53E94619.9020509%40dakotacom.net.
For more options, visit https://groups.google.com/d/optout.
