Re: Electromagnetic field question

[Jim Durham <jsdurham@lamar.colostate.edu>]

I noticed significant oscillations (interference) on my monitor when I placed a small transformer that powers my portable CD player directly behind my monitor.  When I moved the transformer over about 1 foot, the interference stopped (for all practical purposes).  The transformer was not designed for computer use.  Perhaps there is a transformer located within the wall behind the computer terminals.

Jim Durham
jsdurham@lamar.colostate.edu

Mitch J. Belanger wrote:

> Radsafers,
>
> An office in our university was recently renovated and the individual work stations rearranged.  When the employees in one portion of the office installed and began to use their computers, they noticed that the image on the computer monitor would  oscillate.  They speculated that electrical wiring which might be present within the wall next to their work stations might be causing this oscillation.  To test their theory they positioned the monitors next to the wall and then as far away from it as possible.  The oscillations diminished noticeably when the monitors where positioned furthest from the wall.  We are working on determining if any electrical wiring exists within the wall and if it does, what kind of power levels it might be carrying.
>
> Do any of you have any experience with a situation similar to this?  Any comments and/or assistance on how to remedy these oscillations will be greatly appreciated.
>
> Thank you.
>
> Mitch Belanger
> safmjb@panther.gsu.edu
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