Discusses the block diagram,principle and electric circuit of the dynamic property testing system for welding power source with SCP.The system software and interface with computer are introduced.

• 介绍了由单片微机构成的电焊动态性能测试仪的结构、原理及实用电路,设计了系统软件及与通用微机的接口,实现了信号的采集、处理、分析以及对被测系统进行测试、建模等多种功能。