| 摘要 |
An aircraft interior power converter (1) comprises a housing (3) for mounting in or at an aircraft seat, the housing (3) being provided with an AC input connector (5) for connection to an AC input power supply (10) from the aircraft, multiple DC outlets (7) each providing a DC output power supply for connection to electronic equipment and/or lighting in the aircraft interior, and electronic circuitry (9). The circuitry (9) comprises a primary power converter (13) operative to convert the AC input power supply (10) to a primary DC output power supply, the circuitry (9) further comprising a regulator (15) for at least one of the DC output voltages required, the or each regulator (15) being operative to receive the primary DC output power supply and generate a DC input power supply at the voltage required for the particular DC outlet (7) connected to that regulator (15). A respective output protection circuit (17) is provided for each DC outlet (7) and is operative to receive a DC input voltage from at least one of the primary DC output power supply and a respective regulator (15), each output protection circuit (17) comprising a comparator circuit (27) operative to generate a load signal indicative of the electrical load being taken by that DC outlet (7), to compare that load signal against a predetermined load limit, and to generate an output control signal operative to disconnect the DC input voltage from the DC outlet (7) if the load signal exceeds the predetermined load limit. |
