I have this speed controller and it's hooked up to a box fan that blows air out of one window while fresh air is being sucked in through the other. The thing is if I use the speed controller instead of the 3 presets on the fan it makes a loud humming sound.
How do you hookup/wireup a capacitor or something that will get rid of the sound? I heard of people doing this.
http://www.amazon.com/SE-Electronic-Stepless-Speed-Controller/dp/B000HQAVNI
Topic: Speed Controller Fan Humming Noise (Read 659 times)
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