You may acquire a sine wave from your local utility provider or (typically) a generator. This is due to the fact that it is produced by revolving AC equipment, and sine waves are a natural byproduct of spinning AC machinery. A sine wave inverter has the primary benefit that all of the equipment on the market is built for a sine wave. This ensures that the device will perform to its utmost potential. Some products, such as motors and microwave ovens, will only operate at maximum capacity when powered by a sine wave. A sine wave is required by a few products, including bread machines, light dimmers, and certain battery chargers. Sine wave inverters are usually more costly, costing between two and three times as much.