TRANSFORMER PURCHASE GUIDE: Remember to leave at least a 100% slack for the transformer. For the TVs, the power surge margin is 5 times the wattage of the TV. Heating appliances, laser printers and power tools spike when you turn them on. For these products you need to buy a transformer that is at least 3 times the items capacity Deluxe Voltage Stabilizers/Regulators can be used for converting 110/120V to 220/240V or vice versa as well as to regulate the fluctuations in the power. These are also known as automatic deluxe voltage stabilizer, automatic deluxe voltage regulator, deluxe automatic voltage converter, deluxe voltage converter, and deluxe voltage regulator. TRANSFORMER PURCHASE GUIDE: Remember to leave at least a 100% slack for the transformer. For the TVs, the power surge margin is 5 times the wattage of the TV. Heating appliances, laser printers and power tools spike when you turn them on. For these products you need to buy a transformer that is at least 3 times the items capacity These are also known as plug converter, power adapters, universal adapters, travel adapter, travel adapters, international plug adapters, ac dc plug, foreign plugs adapters, travel adapter plugs, electrical converter, foreign power plug, universal plugs, electric adapter travel, universal plug adapter, travel electrical plug adaptor, adaptor plugs, plug adapter, international phone jacks.