Method and apparatus for controlling a notification...

H - Electricity – 02 – H

Patent

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H02H 9/00 (2006.01) H02H 9/02 (2006.01)

Patent

CA 2714487

An arrangement for use in a safety notification system includes an alarm signal power source, a first semiconductor device, a current sensing unit, and a controller unit. The alarm signal power source is configured to generate bias power for activating a notification appliance circuit of a notification system. The first semiconductor device has a load path coupled between the alarm signal power source and the notification appliance circuit. The current sensing unit is operably coupled to generate a sensing signal that is dependent on the current in the load path. The controller circuit is operably connected to receive the current sensing signal and to control the first semiconductor device responsive to a current sensing signal that exceeds an in-rush current threshold.

Un montage destiné à être utilisé dans un système de notification de sécurité comprend une source dénergie pour signal dalarme, un premier dispositif à semi-conducteurs, une unité de détection de courant, et une unité de commande. La source dénergie pour signal dalarme est configurée pour générer une puissance de polarisation destinée à activer un circuit de dispositif de notification dun système de notification. Le premier dispositif à semi-conducteurs possède un trajet de charge couplé entre la source dénergie pour signal dalarme et le circuit de dispositif de notification. Lunité de détection de courant est couplée fonctionnellement afin de générer un signal de détection qui dépend du courant sur le trajet de charge. Le circuit de commande est couplé fonctionnellement afin de recevoir le signal de détection de courant et de contrôler le premier dispositif à semi-conducteurs en réponse à un signal de détection de courant qui dépasse un seuil de courant dappel.

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