Electric lamp and discharge devices: systems – Combined load device or load device temperature modifying... – Plural circuit elements
Reexamination Certificate
2007-09-25
2007-09-25
Tran, Thuy Vinh (Department: 2821)
Electric lamp and discharge devices: systems
Combined load device or load device temperature modifying...
Plural circuit elements
C315S072000, C315S246000, C315S287000, C315S291000, C315S360000
Reexamination Certificate
active
11051600
ABSTRACT:
A lamp contains a lamp voltage conversion circuit that is entirely within a base for converting a line voltage at a lamp terminal to an RMS load voltage at a light emitting element. The voltage conversion circuit includes a forward clipping circuit with a three-terminal thyristor that forward clips a load voltage to define the RMS load voltage, and a time-based pulse source that provides pulses the trigger conduction of the three-terminal thyristor at constant time intervals that are independent of the magnitude of the line voltage.
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Ballenger Matthew B.
Weyhrauch Ernest C.
Bessone Carlo S.
Osram Sylvania Inc.
Tran Thuy Vinh
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