Patent ID: 7839618
Filing Date: 2010-11-23
Classification: H02J,H04B,Y02E,Y04S

Abstract:
1. An AC/DC power device for an AC/DC dual mode power line communication (PLC) modem, comprising: an AC/DC protection circuit coupled to an AC/DC power line, for receiving an AC power or DC power from the AC/DC power line; an AC/DC configuration circuit coupled to the AC/DC protection circuit, for configuring as an AC mode or a DC mode according to that the power line is an AC power line or a DC power line; an AC/DC coupling/filtering circuit coupled to the AC/DC configuration circuit, for coupling and filtering the received AC or DC power, and coupling an AC voltage (in the AC mode) or a first DC voltage (in the DC mode); an AC/DC converter coupled to the AC/DC coupling/filtering circuit, for converting the AC voltage coupled by the AC/DC coupling/filtering circuit, and outputting an second DC voltage; and an DC/DC converter coupled to the AC/DC coupling/filtering circuit and the AC/DC converter, for converting the first DC voltage outputted from the AC/DC coupling/filtering circuit in the DC mode, and converting the second DC voltage outputted from the AC/DC converter in the AC mode, so that a plurality of DC voltages is outputted to respectively provide to analog and digital circuits of the PLC modem.