Help with Ceiling fan spd control

Discussion in 'The Projects Forum' started by mike_in_sd, Dec 8, 2018.

  1. mike_in_sd

    Thread Starter New Member

    Feb 11, 2011
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    I have a remote control ceiling fan that needs a new remote control recvr. Thinking this may be a project, I used my junk box rheostat to vary the ac voltage to the fan to see if it was controllable. It did not alter the speed (much). How does a remote control recv module produce the usual 3 spds ?
     
  2. mike_in_sd

    Thread Starter New Member

    Feb 11, 2011
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    Just to clarify, I removed the rcvr from the fan and hooked the ac right up to the motor wires.
     
  3. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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    A rheostat would an enormous waste of energy not to mention a fire hazard. Companies like Lutron have very suitable solutions that are backed by years of engeering experices and safety. Why are you risking burning your house down when you can buy a fan control for $30 or $40 US?
     
  4. mike_in_sd

    Thread Starter New Member

    Feb 11, 2011
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    Thanks spinnaker, I wasn't even suggesting that I use a rheostat to control the fan. I was just seeing if adjusting the voltage controlled the speed, thats all. And it did NOT. It was just a quick test that I was glad I did because I was surprised that it ran the same speed at 117v as it did at 40v. If the variable voltage would have controlled it I would have built a circuit that allowed me to continuously alter the speed, not just have 3 speeds. Now, can you tell me how the remote receiver controls the speed of the motor so that I can have a basic plan for my project ??????
     
  5. spinnaker

    AAC Fanatic!

    Oct 29, 2009
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  6. mike_in_sd

    Thread Starter New Member

    Feb 11, 2011
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    Cool man, thanks for the link. I feel better about not knowing now though. Non of the answerers were
    sure and some answers were actually contradictory to others. Bottom line appears to be adding different
    capacitances in series with the motor changes the speed. Already seems like a screwed up project so I guess
    I will just order the darn 3 spd replacement box. Thanks for the try though.
    Mike
     
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