Arc welders use High current and a lower voltage. (like 30 volts if i remember correctly)

that is a good idea, but it micht not melt the welding stuff so it might work with soldering

I tried lookin in a new NST, it was potted with white plastic stuff!

 I don't know what a ZVS or NST is... xD

I guess I wanted to know more of what this is used for.

 Oh, s it is used to make halogen gases glow, right?

I think you meant Noble Gasses....

 Don't they use halogens also?

No, you cannot use pure monatomic halogens because they are not stable elements like the noble gasses are. In fact, fluorine is so unstable that it is almost never found in its pure form; that's why they're called "Oxidation Numbers" and "Reduction-Oxidation Reactions" and not "Fluoridation Numbers" and "Reduction-Fluoridation Reactions." Chemists thought that oxygen was the most reactive element on that side of the table simply because fluorine was never found in its pure form. It's called "oxidation" because oxygen has a tendency to strip atoms of their electrons in order to form its standard state diatomic (remember BrINClHOF?), it would have been called "fluoridation" if fluorine were less reactive.

You might then ask, "why not use their more stable diatomics or other molecules that are gasses at SATP?" One reason you might want to use noble gasses is that all of their orbitals are completely filled and they are monatomic in their standard states, in other words, they have the lowest excitation energies. If you use diatomic, triatomic, etc. gasses, then you need to break more stable sigma, pi, etc. bonds than you would if you used a monatomic gas. This translates to a lower breakdown voltage for noble gas excitation and this means that you can use simpler equipment. For example, to make a good sized Argon discharge a few feet long tube, you don't even need a vacuum pump with a standard 20kV power supply. To contrast to this, you would only be able to get an inch long discharge in free air (mostly O2 and N2 gas) with the same power supply.

Did you really expect him to understand what you just said? I mean you don't even learn about sigma and pi bonds until college chemistry or AP chemistry.

I learned all of this in 9th grade.

 Umm...I'll come back with a reply after I take chemistry... or science...lol

I think he's asking why you are using batteries for your experiments.

I harvested a couple of MOTs, but can you instruct me on how to make it supply my driver?