Yes, I have. It still works. You just have to be aware that it is a modified sine wave. It's great for basic stuff. It still runs perfectly. The only thing that bothers me is the fuse holder. The fuses are soldered into the circuit board 2x20A. But if you have a soldering iron, that's no problem. Solder it away, lay a cable to the outside and you have access. But that shouldn't be a problem if you don't confuse positive and negative :) Really great for the price. It amazed me.