The rectifier bridge generally carries a large enough inductive load so that no intermittent current occurs in the rectifier bridge. Generally, the load end of the rectifier bridge is usually connected with a flat wave reactor, so the load can be regarded as a constant current source. Multiple groups of three-phase bridge are connected to each other so that the harmonics generated by the bridge circuit cancel each other. According to the type of rectifier transformer, it can be divided into traditional multipulse transformer and automatic multipulse transformer. The traditional multipulse transformer uses isolation transformer to realize the isolation of input voltage and output voltage, but the rectifier transformer has large equivalent capacity and large volume.

The load of a common rectifier bridge can be regarded as a constant current source because it is usually connected with a flat wave reactor at its load end. In addition, according to EMI measurement standards, in order to reduce the influence of grid impedance on measurement results, linear impedance stabilization network (LISN) should be connected to the grid input of the rectifier bridge.