Power supply for 2-line dimmer

H - Electricity – 05 – B

Patent

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Details

H05B 39/04 (2006.01)

Patent

CA 2626087

A power supply circuit for a dimmer switching device includes a voltage doubler circuit, a filter circuit, a switching power supply, and a linear regulator circuit. In one embodiment, the voltage doubler circuit includes a first stage having a first capacitor and a first diode, and a second stage having a second capacitor and a second diode. The switching power supply may include a feedback circuit, and may be a non-isolated power supply. In an embodiment, the dimmer device is variable between an OFF position and a full ON position, and the circuit is effective to provide power for operation of the switching power supply while the dimmer device is in the full ON position.

L'invention concerne un circuit électrique pour un dispositif à variateur d'intensité, ce circuit comprenant un circuit doubleur de tension, un circuit de filtrage, une alimentation à découpage et un circuit de régulation linéaire. Dans un mode de réalisation, le circuit doubleur de tension comporte un premier niveau doté d'un premier condensateur et d'une première diode et un second niveau doté d'un second condensateur et d'une seconde diode. L'alimentation à découpage peut être pourvue d'un circuit de réaction et elle peut ne pas être isolée. Dans un autre mode de réalisation, le dispositif à variateur d'intensité peut être modulé entre une position ARRET et une position MARCHE maximale, le circuit fournissant le courant pour le fonctionnement de l'alimentation à découpage lorsque le dispositif est en position MARCHE maximale.

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