Abstract
Disclosed is a driving system for multiple lamp tubes, comprising a plurality of AC voltage sources, a multiple phase transformer, and a plurality of loads. The AC voltage sources provide a plurality of voltage signals with different phases. The multiple phase transformer has a plurality of windings of different phases, which are, respectively, a first winding, a second winding, and up to the nth winding, where n is an integer that is greater than or equal to 2. The loads are respectively a first load, a second load and up to a nth load. At least one lamp tube connected to an ith load and an ith winding of the multiple phase transformer in series to form a circuit and is driven by one of the AC voltage sources, where i is an integer between 1 and n. Each AV voltage source drives at least one circuit and the loads and the windings of the multiple phase transformer equalize the electric current flowing through every lamp tube.