COTEK inverter is the DC power (battery, storage battery) into alternating current (typically 220v50HZ sine or square wave). Popular speaking, COTEK inverter is a direct current (DC) into alternating current (AC) devices. It consists of an inverter bridge, control logic, and filter circuit. Widely used in air conditioners, home theater, electric grinders, power tools, sewing machines, DVD, VCD, computers, televisions, washing machines, range hood, refrigerator, VCR, fans, lighting and so on. Simply put, COTEK inverter is a kind of low-voltage (12 or 24 volts or 48 volts) direct current to an electronic device 220 volts alternating current. 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 a moving state, the people not only need low-voltage direct current from the battery or battery supply, but also an essential need in our everyday environment 220 volts AC inverter to meet us this demand.