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Old 11-19-2008, 08:53 AM   #1
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Suppressing RFI in heater fans


I have two heater fans that I use in our upstair's bedrooms. They are made by Vornado. The fans are creating a lot of interference with some appliances downstairs--mainly a TV, a baby monitor, and a guitar amp.

Is there anything I can do to suppress the interference?

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Old 11-19-2008, 11:40 AM   #2
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Suppressing RFI in heater fans


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Originally Posted by bluemoon View Post
I have two heater fans that I use in our upstair's bedrooms. They are made by Vornado. The fans are creating a lot of interference with some appliances downstairs--mainly a TV, a baby monitor, and a guitar amp.

Is there anything I can do to suppress the interference?


I would get those snappable ferrite chokes at radioshack and see what happens.

If that doesnt work, try an rfi filter or surge suppressor with rfi filtering.

If that won't work, get an isolation transformer rated high enough to supply your equipment.

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Old 11-19-2008, 11:46 AM   #3
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Suppressing RFI in heater fans


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Originally Posted by rgsgww View Post
I would get those snappable ferrite chokes at radioshack and see what happens.

If that doesnt work, try an rfi filter or surge suppressor with rfi filtering.

If that won't work, get an isolation transformer rated high enough to supply your equipment.
Would I put the chokes on the fans or the amp, etc.? I bought a power conditioner for the amp, but that didn't help,
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Old 11-19-2008, 11:49 AM   #4
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Suppressing RFI in heater fans


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Originally Posted by bluemoon View Post
Would I put the chokes on the fans or the amp, etc.? I bought a power conditioner for the amp, but that didn't help,

Put the chokes on the fans and the amp...the chokes are only about $1-2.


Are the fans on the same circuit as the amp, tv, etc.?
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Old 11-19-2008, 11:51 AM   #5
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Suppressing RFI in heater fans


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Originally Posted by rgsgww View Post
Put the chokes on the fans and the amp...the chokes are only about $1-2.


Are the fans on the same circuit as the amp, tv, etc.?
No, different circuits.
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