I'm looking for a transformer to step up 120V AC to 1000V AC, but I cannot find anything. It does not have to have a high capacity, as I think I will only need to send 15 watts across it. I'm going to connect this to the input side of a homemade voltage multiplier to power a Crookes tube. I've looked everywhere, but I cannot find a transformer that does what I want. Any help would be appreciated.