Digital and Intelligent SCR Trigger based on Microcontroller and TC787

A SCR trigger based on microcontroller and TC787 is introduced in this paper.It combines the merits of the Smart Power IC and digital trigger,and produces trigger pulses with perfect performance and high symmetry.Making full use of the resources of single 2 chip computer,it realizes phase self adaptive,protection and parameter adjustment on line.It can be used in controlling steady voltage and steady current of load.