Please have the three-phase rectifier checked for the output wave with a dual beam synchroscope.

请用双同步示波器检查三相整器的输出波形。

CH400 transformer coulometer can be widely applied in test on production line of small manufacturer of transformer or rectifier power or in labs.

CH400变压器电量量仪系列用于各种小型变压器或整器电源等厂家的生产水，实验室品验等场合。