| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To control load units through alternating-current (AC) commercial power without using an embedded AC-DC converter or a transformer. <P>SOLUTION: The electronic device 100 includes a plurality of load units 101 to 105, a plurality of serial-parallel switching units 141 to 144 and a control module 150. The control module switches the serial-parallel switch units to a first state or a second state according to a level variation of an input voltage. Connection relations of the load units are correspondingly changed according to the level variation of the input voltage. In this way, the electronic device can be driven by an alternating-current voltage. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
