但是反过来呢?
网上这样说:
If a 220V appliance is plugged into 120V then it will be less dramatic but the power drawn will be 1/4th or the intended amount and the lights will be very dim and the motors will stall or turn very slowly. If they stall it may up the current some but in general it won't work well if at all. Cooking equipment with heater elements will take forever and may not come up to temperature. Electronics with single inputs will probably not be seriously damaged but won't work.
我自己的试验是从中国带来一个节能灯泡,220伏,用在110伏美国环境,可以发光,但是比较昏暗。
明显不妥,存在隐患。甚至有人认为,即使用变压器也不应该长时间使用,因为变压器会发热,有安全隐患。
不应该在美国的110伏电压下用中国的220伏电器。
至于电脑,照相机,手机等电子产品几乎是百分之百的100-240伏自动电压,完全没有关系。