Electronic transformer for lighting

H - Electricity – 05 – B

Patent

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Details

H05B 39/04 (2006.01) H02H 7/00 (2006.01)

Patent

CA 2350050

An electronic transformer (10) for lighting inlcudes a rectifier (13) coupled to an inverter (18, C2, C3, Q1, Q2) an output transformer (T1, T10) and a drive transformer (T2, T11). A protection mechanism (VR1, VR2) is responsively coupled to a winding of the output transformer and to a winding of the drive transformer such that the voltage across each of the windings are approximately equal and opposite during normal operation but differ substantially during a short-circuit.

Transformateur (10) électronique pour éclairage qui comporte un redresseur (13) couplé à un convertisseur (18, C2, C3, Q1, Q2), un transformateur de sortie (T1, T10) et un transformateur de commande (T2, T11). Un mécanisme de protection (VR1, VR2) est couplé d'une part, à un enroulement du transformateur de sortie et d'autre part, à un enroulement du transformateur de commande de façon à ce que la tension aux bornes de chaque enroulement soit approximativement égale et opposée en mode de fonctionnement normal mais sensiblement différente pendant un court-circuit.

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