Review on ELC 200 Watt Voltage Converter Transformer - Heavy Duty & Portable - Step Down 220/240 to 110/120 Volt - Ideal for Hair Straighteners, TVs, Laptops, Chargers - Lightweight Travel Design [3-Years Warranty] by Joseph Rasmussen

I bought this specifically to run a 120v tungsten grinder on the same 240v power supply as my arc welder. The chopper is rated at 1 amp, so the power rating is ideal. Since this is a real step-down transformer, I don't see a problem for my application. It weighs around 1.5 pounds, so it might not be great if you use it for travel and ultralight backpacks, but it gets the job done perfectly. The Revain review asked for a "drying power" rating, which is grossly inadequate for this 200W unit. It works with your small appliances, but NOT with a 2kw hair dryer! Stupid Revan.