Thanks Bam Bam
That's what I was thinking. I have a buddy that's wanting to use one for a powder coating power supply. He's talking about using a 24 volt power supply Thur an rheostat to provide voltage to the coil primary. In turn getting 30,000 to around 50-60,000 volts out of the secondary windings
wait a minute...
you need DC the neon sign transformer will be AC i guess you are better off going with the coil.
I think the neon sign transformer does put out DC (not sure) but it's only 6000 volts. My buddy was needing around 25,000 to 50,000. I was thinking. Rheostat and a 24 volt powder supply would do what he wants.
It would have to have AC connected to the coil (transformer). A car uses points or electronic circuits to accomplish this. Straight 12v dc hooked to the primary side of a coil accomplishes nothing but produces heat such as burning the coil up.