The toyota prius inverter is excellent.
It moves cars, moved derpbike, and now it makes a pretty good welder too. It should be noted that through all of this abuse*, neither I nor my peers have managed to kill one. Remarkable! On top of that, it’s not a pain to use. The pins are nicely labeled, the logic side is isolated from the power side, and all of the hard power electronic stuff (gate drive & layout) is done for you. That’s why this device is a steal at the going ebay rate of $200. (less for a slightly dinged-up one)
*repeatedly tripping the built in overcurrent shutdown, plugging it into the wall, covering it in grinding dust
A prius inverter would make an excellent teaching tool for power electronics.
I’ve been welding a lot with spoolguns (flux cored wire), stick electrodes, and car batteries recently. These methods are pretty excellent for dirty, strong-e-nuff welds that are as portable as a couple of car batteries and some jumper cable.
So why complicate things by making this sweet and simple setup
into this one?
to do stoopid stuff like this: