nixie tube

Go to my website, click pictures, then nixie tube.
Do you know how to use this nixie tube?
By connecting the filament to 3v and the grids and anodes to 12v, I can get it to glow.

Vacuum Fluorescent Display?

Hi Star882
Sorry this isn't much help but I thought these things were called "Vacuum Fluorescent Displays", "VFD" for short, I always thought Nixies were thermionic valves that contained a series of shaped anodes; excited by around 90v DC to show the required numeric (a blast from the past).

Your 'VFD' is from an old video recorder? I wouldn't mind betting it has more than one grid (guess at 3, each covering a third of the display) and anode each terminal connected to one segment under each grid area, giving a sort of multiplexing to keep the number of terminals down.

There again --- I could be wrong ?

Nixies are not thermionic valves, they are cold cathode discharge tubes.
You can read more about them here: http://www.netcomuk.co.uk/~wwl/count.html