Energy conservation dimmer device for gaseous discharge devices

H - Electricity – 05 – B

Patent

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Details

H05B 37/00 (2006.01) H05B 37/02 (2006.01) H05B 41/288 (2006.01) H05B 41/38 (2006.01) H05B 41/40 (2006.01)

Patent

CA 2431914

A dimmer control device (100) is disclosed which determines when to switch a voltage level supplied to a light fixture (160) comprised of a plurality of light bulbs (162) by monitoring the phase relation between an input voltage (190) and input current (180). When the phase relation is within acceptable tolerance limits, external control inputs to lower, ..., dim, or raise the illumination level are accepted and processed. The dimmer control device(100) further compensates for warmup and startup transitions by directing input voltage (190) through relays (290) that provide full voltage until desired voltage/current phase relation is established within acceptable tolerance levels. And further provides for a full voltage output when a failure or abnormal conditions are determined.

L'invention concerne un dispositif de commande (100) de gradateur qui détermine quand doit être commuté un niveau de tension amenée à un luminaire (160) constitué d'une pluralité d'ampoules (162), par surveillance de la relation de phase entre une tension d'entrée (190) et un courant d'entrée (180). Lorsque cette relation de phase est située dans des limites de tolérance acceptables, des entrées de commande extérieures pour abaisser, c'est-à-dire atténuer, ou augmenter le niveau d'illumination sont acceptées et traitées. Ce dispositif de commande (100) de gradateur compense d'autre part des transitions de réchauffement ou d'amorçage en dirigeant la tension d'entrée (190) à travers des relais (290) qui fournissent une tension maximale jusqu'à ce que la relation de phase tension/courant voulue soit établie dans des niveaux de tolérance acceptables. Ce dispositif de commande (100) de gradateur fournit également une tension de sortie maximale lorsqu'une défaillance ou des conditions anormales sont déterminées.

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