A DC to AC inverter circuit transforms 12V DC input into 220V AC output, enabling you to power standard household devices from battery sources. There are four CD4047 inverter circuits that can convert 12V to 220VAC 50HZ, we use IC-4047 for oscillators and transistors drive the transformers to output. An inverter is an electronic device that converts direct current (DC) electricity into alternating current (AC) electricity. It is commonly used to power AC devices from a DC source such as a. A very simple way to use an inverter for emergency power (such as during a power outage), is to use a car battery (with the vehicle running), and an extension cord running into the house, where you can then plug in electrical appliances.