Triacs Operation for Appliance Techs

By Samurai Appliance Repair Man,

Master Samurai

Triacs are used extensively in modern appliance control boards to control AC loads. Professional appliance repair technicians need to understand how triacs work and to know when they are controlling the power supply to the load they’re troubleshooting. In this article, I’ll show you how to identify a triac on the schematic and explain what they do. I’ll give you a functional understanding of how they work, including how the microprocessor turns a triac on and off. Finally, I’ll tell you the three big things every tech needs to know and understand about triacs. Come with me now on a Journey of Total Appliance Enlightenment…

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