Electrical light socket

H - Electricity – 05 – B

Patent

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Details

H05B 37/03 (2006.01) H01R 13/66 (2006.01) H01R 33/05 (2006.01) H02H 9/04 (2006.01) H02H 3/32 (2006.01)

Patent

CA 2331848

A light socket is disclosed that has a built-in integrated circuit for rectifying the alternating current received from an electrical outlet and limiting the direct current produced. The light socket is specifically suited for low-current, low-voltage applications such as supplying DC to a string of ornamental lights. The integrated circuit has a diode with a modified cathode that acts as a fuse as it is rectifying the alternating current. The cathode is formed of a plurality of electrically parallel conductors. Excessive current blows out at least some of these conductors in the same way a conventional fuse blows. Various embodiments add other current-limiting elements, elements for producing full wave or near full wave rectification, and for opening the circuit when they detect extraneous currents.

La présente invention concerne une douille électrique qui contient un circuit intégré destiné à redresser le courant alternatif provenant d'une prise de courant et à limiter le courant continu produit. La douille est spécifiquement adaptée à des applications à basse tension et à courant faible telle que la fourniture de courant continu à des guirlandes lumineuses de décoration. Le circuit intégré possède une diode dont la cathode est modifiée en vue de se comporter comme un fusible pendant le redressement du courant alternatif La cathode est formée d'une pluralité de conducteurs électriques parallèles. Un courant excessif fait sauter au moins certains de ces conducteurs de la même manière qu'un fusible conventionnel saute. Différentes réalisations concernent d'autres éléments limiteurs de courant, des éléments destinés à produire un redressement à deux alternances ou presque, et une ouverture de circuit en cas de détection de courants parasites.

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