| 摘要 |
Power supply, installed within a computer, for enabling signals to be transmitted and received between the computer and at least one electrical device external to the power supply, the power supply including an electrical interface, at least one power cable, a low pass filter, a power line modem, an AC to DC converter and a DC to DC converter, the low pass filter being coupled with the electrical interface via a first one of the power cables, the power line modem being coupled with the first one of the power cables via a second one of the power cables and with a motherboard of the computer, the AC to DC converter being coupled with the low pass filter and the DC to DC converter being coupled with the AC to DC converter, the power line modem and the motherboard, the electrical interface for coupling the power supply with an electrical socket and for receiving high voltage AC electricity, the power line modem for modulating and demodulating over power lines the signals to be transmitted and received between the computer and the electrical device, the AC to DC converter for transforming the high voltage AC electricity to DC electricity and the DC to DC converter for converting the DC electricity to low voltage DC electricity and for powering the power line modem, wherein the low pass filter is for substantially eliminating noise on the first one of the power cables and the second one of the power cables caused by the AC to DC converter and the DC to DC converter.
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