EMI From Ceiling Fan

[AL7CR]

I have exactly the same problem as described in a post from Flaw101 in this forum entitled "Interference". Unfortunately the thread is closed and I can not PM the original poster to find his solution. The system indicated he was here yesterday so ... @flaw101 what did you do?

Thanks

 

[Bubba1661]

I have the same problem too, what was the cure?

 

[iMONITOR]

It's most likely from a speed controller if it's has variable speed. If so, replacing the controller with just an On/Off switch or replacing the entire fan is probably the only solution.

 

[dlwtrunked]

Several things that cause EMI interference that are banned from my house:
-Fluorescent lights
-Dimmer light switches/light
-Reversible rotation washers (really can mess things up enough to make one scream)
-Devices from the power company to control water heater times to reduce system load (these are not well shielded and they sometimes interfere on VHF - in my case the local 2m frequency(I disconnected it myself the day it was installed after complaining -to them)
-Old CRTs

Not much you can do about the above particularly when your neighbors use them.

I originally banned LED bulbs but later models are on special secret probation.

 

[ind224]

You would think my beloved M8000 decoder would play nice but on 5Mhz I can hear garbage via 570D that feeds it.

 

[iMONITOR]

I've been very lucky! Every light bulb and floodlight inside and outside my home are LEDs, and three LED dimmers, and a variable speed ceiling fan that also has a LED cluster light in the middle. I also have a Phillips HUE wireless lighting control system, Alexa is controlling a ton of things in my home. I also have a SimpliSafe wireless alarm system with tons of various wireless sensors! I also have 2.4GB and 5GB WiFi throughout the entire house, as well as a couple hundred feet of CAT6 network cable. Nothing seems to interfere with any of my four scanner radios, all using indoor antennas, and none of them are grounded.

 

[GlobalNorth]

Anyone run into RFI issues with a fan motor controller that converts AC to DC?

 

[iMONITOR]

Anyone run into RFI issues with a fan motor controller that converts AC to DC?

Maybe some of these links will offer a solution. Or, replace the fan?

How to reduce noise from DC motor - Lab Projects BD

How to reduce noise from DC motor using filters and some common design practices. Using LC filters, and suppressor capacitors...

labprojectsbd.com

https://www.electronics-tutorials.ws/power/transient-suppression.html

How to filter noise from fan

I try to make controller for 12V fan, where I can vary voltage from 3V to 12V on this fan. It works OK, but it makes electrical noise on 12V power line. How could I get rid of it? How to filter it,...

electronics.stackexchange.com