Purpose
The DC converter (Inverter) is designed to convert a vehicles 12 volt DC power to 120 Volt AC, allowing an electronic device to be plugged in and operated just as if it were being used in the house. The reason these devices are referred to as inverters they convert power from one voltage to another.
Major Role
An inverter converts a lower voltage to a higher voltage; specifically, it converts the 12 volts a vehicle operates on to the normal 120 volt house current. Although a car power inverter is not the only type of inverter that exists, it is the most common type of inverter.