These are
step up/down transformers that can convert USA 110V to Japan 100V or Japanese 100V to American 110V/120V. These
voltage transformers are meant for using japanese products in the USA or for using american products in Japan.
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.
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.jpg','VT 1000J - Step Up / Down Transformers');)
.jpg','VT 2000J - Japanese Up/Down Transformers');)
.jpg','VT3000J - Japan Up/Down Voltage Transformer 100V/120V');)