Sine wave inverter is a kind of inverter, it is the DC electric energy (power battery, battery) into alternating current (generally 220V, 50Hz sine wave) power electronic device. Inverter and ACDC converter are the opposite process. ACDC converter or power adapter will be 220V AC rectifier into direct current to use, and the inverter has the opposite effect, so it is named.

Sine wave inverter is an electric energy conversion device that converts direct current into alternating current. It completes the inverter task by conducting and turning off power semiconductor devices according to specific rules. Modern inverter technology is a science to study the theory, application and design method of inverter circuit. It is a practical technology based on industrial electronics technology, semiconductor device technology, modern control technology, modern power electronics technology, pulse width modulation technology, semiconductor current converter technology and magnetic materials, etc. Therefore, the application of sine wave inverter runs through many fields of society and life.