F - Mech Eng,Light,Heat,Weapons – 21 – S
Patent
F - Mech Eng,Light,Heat,Weapons
21
S
F21S 4/00 (2006.01) H02M 7/06 (2006.01) H05B 33/00 (2006.01) H05B 33/08 (2006.01)
Patent
CA 2547865
An improved decorative light string circuit comprises full bridge rectification located in or downstream of the front plug, wherein the rectification circuit contains one or more voltage reducing and/or filtering elements in order to reduce or limit LED drive current and reduce (filter) DC ripple and 1 or 2 LED series sets. Additional rectification circuits and LED series sets can be added in parallel to the first in "stacked mode", with each rectification circuit and LED series set electrically independent of prior and subsequent circuits. This eliminates the rectifying diode current summation load restrictions imposed by prior art and associated safety hazard due to diode overheating.
Un circuit amélioré de guirlande lumineuse décorative comprend un pont de redressement complet situé dans la prise avant ou en aval de celle-ci, dans lequel le circuit de redressement contient un ou plusieurs éléments de réduction et/ou de filtrage de tension afin de réduire ou de limiter le courant alimentant les DEL et de réduire (filtrer) les ondulations c.c., et 1 ou 2 ensembles en série de DEL. Des circuits de redressement et des ensembles en série de DEL additionnels peuvent être ajoutés en parallèle aux premiers en « mode empilé », chaque circuit de redressement et ensemble en série de DEL étant électriquement indépendants des circuits aval et amont. Ceci élimine les restrictions de charge cumulative due au courant des diodes imposées par les techniques antérieures, et le danger associé à la surchauffe des diodes.
Fiber Optic Designs Inc.
Ridout & Maybee Llp
LandOfFree
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