This study simulated the application of thyristor in AC motor control using the tool simulink in matlab programming language. Simulink in matlab programming language is a powerful tool which is used to simulate the power element and circuit applications and it is used in many other research applications. This study examined the opening and closing characteristics of the thyristor in control of a pure resistance load and a pure inductance load (AC motors) by one or two thyristors. This corresponds with the control of the half cycle and whole cycle of the power supply. The results showed that the use of one or two thyristors to control AC motors significantly improves the operational performance of the engines. These results can be used in teaching electronics to physics students at Teacher Training Universities. Because the various input parameters yield different results, the opening and closing mechanism of the thyristor can be explained.