Simple Inverter

             An inverter is an electrical device that converts direct current (DC) to alternating current (AC). the converted AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits. An inverter is essentially the opposite of a rectifier.
            Static inverters have no moving parts and are used in a wide range of applications, from small switching power supplies in computers, to large electric utility high-voltage direct current applications that transport bulk power. Inverters are commonly used to supply AC power from DC sources such as solar panels or batteries.
            The electrical inverter is a high-power electronic oscillator. It is so named because early mechanical AC to DC converters were made to work in reverse, and thus were "inverted", to convert DC to AC.

Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and commutator-type electric machines of the dynamo type. Direct current may flow in a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric charge flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for direct current was Galvanic current.

Circuit Diagram of Simple Inverter

Components Required

1. IC CD4047.
2. Resistors (1k,18k,100Ωx2).
3. Capacitors (0.22µF).
4. Transformer (220v 50hz to 12v-0-12v 5 Amps).
5. MOSFETS (IRFZ44 2no's).
6. Battery 12v 5 Amps.

Note

1.  If you want an LED indicator, the you can simply add a resistor (1K) and a LED bulb as represented in the above picture.
2. Use suitable heat sinks for mosfets.
3. In order to get a stable output which is 230v 50hz use a capacitor in the output of transformer.
4. the transformer which is used is a simple step down transformer which is connected in reverse manner.