The inverter is a converter that converts direct current energy (from batteries or storage batteries) into fixed-frequency and fixed-voltage or variable-frequency and variable-voltage alternating current (generally 220V, 50Hz sine wave). It consists of an inverter bridge, control logic and filtering circuits. It is widely used in air conditioners, home theaters, electric sanders, power tools, sewing machines, DVDs, VCDs, computers, televisions, washing machines, range hoods, refrigerators, video recorders, massagers, fans, lighting, etc. If you are driving out for work or traveling, you can use the inverter to connect the battery to power various appliances and tools. The vehicle-mounted inverter output through the cigarette lighter is in power specifications of 20W, 40W, 80W, 120W to 150W. For larger power inverters, they need to be connected to the battery through a connecting cable. By connecting household appliances to the output of the power converter, various appliances can be used in the car. The appliances that can be used include: mobile phones, laptops, digital cameras, cameras, lighting lamps, electric razors, CD players, game consoles, palmtop computers, power tools, car refrigerators and various travel, camping and medical emergency appliances.