| 摘要 |
There is disclosed an electric appliance (100, 200, 300, 400, 500, 600, 700, 800) with a positive temperature coefficient (PTC) heater (102, 202, 302, 506, 702) and a number of batteries (106, 206, 308, 406, 508, 606, 708, 806), in which the PTC heater (102, 202, 302, 506, 702) is adapted to be powered by the batteries (106, 206, 308, 406, 508, 606, 708, 806) and an outside electric power source, and the PTC heater (102, 202, 302, 506, 702) is adapted to be powered by the outside electric power source when the electric appliance (100, 200, 300, 400, 500, 600, 700, 800) is started, and to be subsequently powered by the batteries (106, 206, 308, 406, 508, 606, 708, 806).
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