Airfield lighting with led

Details Airfield lighting with led Airfield lighting with led

H - Electricity

05

B

H05B 37/03 (2006.01) H05B 33/08 (2006.01)

Patent

CA 2701334

A method of feeding electric power to an LED (4) in an airfield lighting unit (7). The method comprises the steps of: feeding a constant alternating current (1s) to a rectifier (40), rectifying the alternating current (U) to a rectified current (1r), pulse width modulating the rectified current (1r), charging a capacitor (43) with the pulse width modulated rectified current (1r), and feeding the LED (4) with power from the capacitor (43).

Procédé d'alimentation électrique d'une DEL (4) dans une unité de balisage de terrain d'aviation (7). Le procédé comprend les étapes consistant à fournir un courant alternatif constant (ls) à un redresseur (40), à redresser le courant alternatif (U) de manière à obtenir un courant redressé (lr), à moduler en largeur d'impulsion le courant redressé (lr), à charger un condensateur (43) à l'aide du courant redressé modulé en largeur d'impulsion (lr) et, à alimenter la DEL (4) grâce à l'énergie qui provient du condensateur (43).

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