Parallel transformer with output side electrical decoupling

Details Parallel transformer with output side electrical decoupling Parallel transformer with output side electrical decoupling

2011-05-24

2011-05-24

Le, Don P (Department: 2819)

Electric lamp and discharge devices: systems

Current and/or voltage regulation

Plural load device regulation

C315S277000, C315S268000, C315S246000

Reexamination Certificate

active

07948191

ABSTRACT:
A higher power package is provided in a smaller package by providing at least first and second magnetics in parallel in first and second transformers. To limit degrading performance associated with circulating current between the two transformers, the transformers are electrically decoupled. In a preferred embodiment, the circuit includes parallel primary and secondary windings of the transformer that are decoupled electrically on an output side. Particularly, diodes are provided in a preheat portion of the circuit so that once the preheat phase is terminated, the diodes prevent current flow in one direction through the preheat portion of the circuit.

REFERENCES:
patent: 6323603 (2001-11-01), Persson
patent: 6459214 (2002-10-01), Chen et al.
patent: 6724155 (2004-04-01), Flory et al.
patent: 7193368 (2007-03-01), Chen et al.
patent: 7315130 (2008-01-01), Chen et al.

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