A device called an inverter is used to convert DC (direct current) to AC (alternating current) power. Inverters are designed to take the one-way flow of DC and convert it into the oscillating flow of AC. The process of conversion involves turning DC into AC and then increasing the input voltage to reach an output of 230V usable by all appliances. Inverters work by relying on transistors and constantly altering DC’s flow of current several times per second to achieve the desired output of AC. There are two types of inverters: modified sine-wave (MSW) and pure sine wave (PSW) .