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Fan Motor/EMI/Health

Discussion in 'General Electronics' started by Aaron Chan, Sep 13, 2003.

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  1. Aaron Chan

    Aaron Chan Guest

    Hello all,

    I have recently bought a destkop fan. However, upon placing it near my
    computer monitor, it distorts the display considerably. I know this is
    caused by Electromagnetic Interference. I have since placed the fan away
    from the monitor, which fixes the distortion problem. However, I have one
    last question. Does this sort of EMI have any adverse effect on my health,
    or is it negligible (remember it is strong enough to distort the monitor)?

    Thanks in advance,
  2. Dan Hollands

    Dan Hollands Guest

    The only health effect that has been shown for EMI is if the energy is
    sufficient to cause heating of the cells as in microwave oven. There is no
    effect from the low frequency EMI from the fan.


    Dan Hollands
    1104 State Road
    Webster NY 14580
  3. Brian

    Brian Guest

    It will be the magnetic field from the fan, which is not EMI (
    "ElectroMagnetic" ie radio type signals).
    Not known to be harmful!
  4. If you set the monitor refresh rate to be the same of double your line
    frequency, then the wavering will stop even if the motor is near them
    monitor. Diet Sleep and exercise is more important than staying away
    from motors.
  5. I have recently bought a destkop fan. However, upon placing it near my
    The electron stream in a CRT tube is specifically INTENDED to be
    deflected by electromagnetic force. In fact, it's a pretty sensitive
    detector of such force.

    If you spend any time at all sitting in front of a computer monitor,
    I'd worry about radiation from that infinitely more than about emr
    from a motor. Oh yes, and don't go out in the sunlight.
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