| 摘要 |
Motorised furniture apparatus comprises leg rest, sitting and back rest parts (8,10,12) of an aircraft seat (6) of which the parts (8,10,12) are movable relative to each other. Actuators (22,32) are connected to the leg rest part (8) and the sitting part (10) to move them. A control arrangement controls the actuators (22,32) and includes and offline switch mode power supply arrangement to supply power to the actuators (22,32). The switch mode power supply arrangement supplies electrical power at a frequency in the range from 50 Kilohertz to 200 Kilohertz, preferably about 100 Kilohertz. |
