Patent ID: 8053998
Filing Date: 2011-11-08
Classification: H05B

Abstract:
1. An inverter for driving at least cold cathode fluorescent lamp (CCFL), the inverter comprising: a switching circuit for generating at least one switching signal according to a DC signal and at least one switching control signal; an electric-isolated circuit having an electric-isolated side and a non-electric-isolated side, wherein the non-electric-isolated side is electrically connected to the switching circuit and generates a first power signal according to the switching signal; a transforming circuit having a plurality of transformer each having a primary winding and at least one secondary winding coupled to the primary winding, wherein the primary windings are connected in series and electrically connected to the electric-isolated side of the electric-isolated circuit, the secondary winding is electrically connected to the CCFL, and the transforming circuit generates a second power signal to drive the CCFL according to the first power signal; and a sequential control circuit coupled to the transformers for respectively controlling to selectively enable or disable the transformers in sequence, wherein the sequential control circuit comprises a plurality of reset switches respectively coupled to the primary windings, and the reset switches are turned on or turned off in sequence.