Balanced current circuit

This invention provides a balanced current circuit, including a switched-mode power supply and a differential transformer and two sets of adjusting modules. The differential transformer has an input end, a transformer main body and two output ends. The input end receives the AC power to magnetize the transformer main body and output a driving current from the out ends. When each LED strings load are unbalanced, using the coupling relationship of the transformer main will make each output end to output balanced current. Each adjusting module includes a demagnetizing unit for demagnetizinge the differential transformer and reset the differential transformer and a rectifying unit for rectifying the driving current and then supplying the rectified driving current to each LED string. The efficacy of this invention is that can output the balanced current without complicated control and reduce component costs.