Electric lamp and discharge devices: systems – Plural series connected load devices – Christmas lights
Reexamination Certificate
2007-07-31
2007-07-31
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Plural series connected load devices
Christmas lights
C315S18500S, C315S201000
Reexamination Certificate
active
11332281
ABSTRACT:
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.
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Berenato White & Stavish
Fiber Optic Designs, Inc.
Tran Thuy Vinh
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