What is preferred and safe mode for controlling power to an Inductive AC load when driven by a Triac?

I am using a microcontroller with zero crossing optocoupler to drive the control signal and the load is Cieling fan.

If only one is suitable for it then what is the other method used for ? Resistive loads?

  • \$\begingroup\$ Phase cutting is more accurate and has greater resolution than pulse skipping. \$\endgroup\$
    – vini_i
    Dec 28, 2018 at 14:42
  • \$\begingroup\$ Inductive AC loads sometimes need frequency control rather than average voltage control. \$\endgroup\$
    – Andy aka
    Dec 28, 2018 at 15:12
  • \$\begingroup\$ @vini_i but is it safe for the equipment ? it can induce lot of switching noise \$\endgroup\$
    – Allahjane
    Dec 28, 2018 at 16:28
  • \$\begingroup\$ It then depends on what kind of inductive load you have. Inductive motors won't like anything other than frequency control. Universal wound motors generally tolerate it. Transformers don't care too mutch. \$\endgroup\$
    – vini_i
    Dec 28, 2018 at 18:54


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