Help driving an old Vacuum Fluorescent Display
Just connect ~3.3 volts on the filament and 12-24 volts on the phosphors and grids. No driver circuit required. Also, you need to connect a ground to the filament.
So, wire it like this:

One side of the filament goes to 3.3v, the other goes to ground. Connect ~19v to a grid and then connect ~19v to Random pins and you should see something lighting up. 

Also, the power supply needs to have a common ground or you have to connect the ground of the Two power supplies together