50 Hertz and 60 Hertz power sources are most often used in international power systems. Some countries (regions) commonly use 50Hz power source while other countries use 60Hz power source, but some appliances are not designed for both frequency operation. Then it comes GoHz Frequency Converter. By using a GoHz frequency converter, you can convert 110V 60Hz to 220V 50Hz; 120V 60Hz to 240V 50Hz; 230V 50Hz to 110V 60Hz; 480V 60Hz to 400V 50Hz; ... ... Frequency Converter, also named as AC power source, is a electronic device to convert fixed frequency (50 Hz/ 60 Hz), fixed voltage (100V, 110V, 120V, 220V, 230V, 240V, 380V, 400V, 440V, 480V etc) to variable frequency (50Hz, 60Hz or even 400Hz) and variable voltage to compatible with global power system. By using a GoHz static (solid state) frequency converter, you can change 110V, 120V 60Hz to 220V, 230V, 240V 50Hz in a single step to make your home appliances work great in both 60Hz and 50Hz power supplies. GoHz.com supplies both single phase and three phase solid state frequency converters built-in step-up/step-down transformers, power capacity from 500 VA to 400 kVA. Buying a static pure sine wave frequency converters to convert single phase 110v/120v 60Hz to 220V/230V/240V 50Hz (or vice) for your home appliances, convert three phase 220V 60 Hz to 380V/400V/440V/480V 50 Hz for industrial machines, also can change 60Hz/50Hz frequency to 400 Hz for aircraft/ military devices.