| 摘要 |
A power adapter includes a power converter circuit, a direct current (DC) plug and a magnetic switch. The power converter circuit converts power signals of a power source into DC power signals. The DC plug is engageable with a jack of a powered device, and transmits the DC power signals to the powered device. The DC plug includes a magnetic force conducting wire to conduct magnetic force of a magnetic element when the powered device is powered. The magnetic switch, connected between the power source and the power converter circuit, is turned on or off according to if the magnetic force conducting wire conducts the magnetic force or not so as to control the power source to provide power to the power converter circuit. |
