Help me with my electrical project.

[Ehgemus]

As some of you know I have been building some titanium hosts and anodizing them. Anodizing titanium is based on dc voltage, each volt for 1-130 volts give you a different color. So I need a power supply that is adjustable from 1-130 dc volts. Current does not have to be high at all 1-2 amp is plenty. A power supply for this purpose is about 230 bucks so I would like to build one instead.

So what I have so far is a transformer that I rewound and it puts out 149v ac after I run it though a rectifier I have 135 volts dc. What I need help with is the voltage control itself. I need to be able to adjust it anywhere from 1-130 volts. I thought about a ceiling fan switch but I don't thank it's going to give me the full range that I need, any ideas on this? Thanks

 

[Things]

I have a friend that got a high voltage adjustable PSU for this purpose, was fairly cheap too IIRC and it even had digital control, if you wanted to use it on a CNC-type setup. I'll see if I can find it.

 

[Sigurthr]

If you still want to DIY it yourself just get an inexpensive Variac to power that transformer with. Any other solution will be expensive or (relatively) difficult to construct.

 

[The Lightning Stalker]

I agree. Variacs are the way to go. Then into a rectifier
and possibly a capacitor. Just be extra careful with
shorts. I was trying to anodize aluminum the other day
and a short blew my diodes. Shorts can develop for
seemingly no reason.