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Do you mean to control the speed of a fan?hello gys,I,m working on a fan dimmer.
Do you mean to control the speed of a fan?
What kind of fan? Do you mean an AC fan like a ceiling fan?
actually its possible,i did it.currently I'm fine tuning timing of firing the triac.i needed a snubber to prevent triac from continoues turn on.That's what I was afraid of. You can't "dim" a ceiling fan like a light bulb. They use an AC induction motor, and the speeds are varied by using different value of the phasing capacitor that runs the motor. If you try to do a "dimmer" to vary speed the motor will overheat and eventually stall.