Patent ID: 7977888
Filing Date: 2011-07-12
Classification: H05B

Abstract:
1. A backlighting arrangement comprising: a driving transformer arrangement exhibiting a first output lead and a second output lead, said first output lead and said second output lead of said driving transformer arrangement exhibiting opposing phases; a plurality of lamp pairs, each of the constituent lamps of the plurality of lamp pairs exhibiting a first electrical connection and a second electrical connection; and a plurality of balancing transformers, each comprising a primary winding and a secondary winding magnetically coupled to said primary winding, and each associated with a particular one of said plurality of lamp pairs, the primary winding of each of said plurality of balancing transformers being serially connected between said second electrical connections of the constituent lamps of said associated lamp pair, wherein the secondary windings of said plurality of balancing transformers are serially connected in phase, with a first end of the serially connected secondary windings of said balancing transformers connected to said first output lead of said driving transformer arrangement, and said first electrical connection of at least one of the constituent lamps of each of said plurality of lamp pairs connected to said second output lead of said driving transformer arrangement.