Some inverters will damage certain appliances or tools that they are not designed to power. Be especially wary of capacitor devices, such as chargers for battery-operated drills. If connected to the inverter, the drill s battery charger and rechargeable battery may overheat, damaging the battery pack and the charger. The following are different categories of inverters, based on the method by which they convert DC to AC, and the application in which they are used. In a rotary inverter, DC electricity input powers a DC motor that turns an AC generator.
Rotary inverters are reliable and produce a pure sine-wave output.
Rotary inverters are not as common as electronic inverters. There are two types of electronic inverters. One method uses large transformers to handle the large amount of current or amperage entering the inverter from the battery. This makes the inverter bulky and heavy, because each step up in output wattage from the inverter requires progressively larger transformers. In the United States, 60Hz is the same frequency available from the outlets in your home.