Researching electronic system of the SC-920 control circuit of the DDL-8700-7 single needle sewing machine and application

The paper presents the research results of the relationship between the mechanical, electrical, and electronic parts of the SC-920 control circuit in the DDL-8700-7 single-needle sewing machine; analyzing the operating principle of the SC-920 control circuit electronic system according to each control block. In this study, theoretical and experimental research methods were used to measure, test, and evaluate the parameters.