Inside the inverter is an automatic transfer switch to handle switching of the inverter's AC output from between the inverter created power and the 120 volt input power. . A power inverter, inverter, or invertor is a power electronic device or circuitry that changes direct current (DC) to alternating current (AC). [1] The resulting AC frequency obtained depends on the particular device employed. While AC is the standard form of electricity used in most homes and industries, many power sources, such as solar panels and batteries, generate DC power. AC power, commonly supplied by power grids, fluctuates in direction, while DC power flows in a single direction. The rectifier uses components like diodes to allow current to pass through in only. . Rectifiers and inverters are power conversion devices, mainly used in AC and DC power systems. This article will introduce the working principle and application scenarios of inverter and rectifier respectively, and then analyze the comparison of inverter vs rectifier, what are the differences. . An inverter circuit is used to convert the DC power to AC power. Inverters can be of two types True/pure sine wave inverters and quasi or modified inverters. These modified inverters produce a square. .