i need to regulate the speed of a noisy kitchen FAN from a microcontroller (arduino board), i have been looking around and checked a lot of websites and schematics, and i think the solution should goes to a TRIAC regulator I think...
The point is that i have no knowledge in power electronics and i don't know witch circuit is going to be good and reliable. I have seen some circuits that use only a TRIAC and others that uses a TRIAC and a DIAC... Why is the difference? and the DIAC function?
Could you provide me with some good schematics or recommendation form my situation?
thanks you very much :)