In order to regulate discharging energy of a single pulse availably,a MAO flyback switching power supply made of several current pulse units connected in parallel was proposed.The load characteristics of MAO power supply was analyzed briefly and the equivalent circuit model during energy exchanging between primary winding and secondary winding of coupled inductors was established.Based on the model,the effect of energy exchanging of coupled inductors on current pulse waveform and pulse energy was analyzed,and simulation and experiments were carried out.The results show that the current pulse waveform is mainly affected by parameters and residual voltage of the MAO load,the leakage inductors of primary/secondary winding and the peak current of primary winding,and the pulse energy could be out of control if peak current of primary winding is excessive.