The inverter is a kind of low-voltage (12 or 24 volts or 48 volts) DC into 220 volts AC electronic devices. Because we usually 220 volts AC into DC rectifier to use, and the role of the inverter on the contrary, hence the name. We are in a "mobile" era, mobile office, mobile communications, mobile leisure and *. In moving the state, people not only need low voltage direct current from a battery or battery supply, but we need more indispensable in everyday environments 220 volts AC inverter to meet this demand we