Patent ID: 7750581

Claim:
A system for driving a plurality of cold-cathode fluorescent lamps, the system comprising: a subsystem configured to receive at least a DC voltage and generate a first AC voltage in response to at least the DC voltage; a power converter configured to receive the first AC voltage and convert the first AC voltage to at least a second AC voltage; a plurality of current balancing devices, each of the plurality of current balancing devices being configured to receive two currents and balance the two currents, the plurality of current balancing devices including at least a first current balancing device, a second current balancing device, and a third current balancing device; and a plurality of lamp pairs, the plurality of lamp pairs including at least a first pair, a second pair, and a third pair; wherein: the first pair, the second pair, and the third pair are in a parallel configuration, the first pair being associated with a first current, the second pair being associated with a second current, the third pair being associated with a third current; the first current balancing device is configured to balance the first current and the second current; the second current balancing device is configured to balance the first current and the third current; and the third current balancing device is configured to balance the third current and the second current.