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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Thinking complete... posted by rick_m on April 2, 2007 at 13:01:13:
O.K. Rick, Let's take a close look at some microwave theory here.
If you take that analyzer and connect a length of romex or line cord, and terminate into 50 ohms, your insertion loss and return loss will be all over the map. Why? because romex is not a 50 ohm line. The insertion loss alone will negate any conducted power along the line. Now instead of a nice clean 50 ohm termination use a variable termination of anywhere from 1 ohm to 10K ohms and think of the insertion and retrun loss under those conditions.
Now think of a power resistor claiming that it will absorb microwave energy and placing somewhere on the AC line. If you manage to place the resistor in exactly the right place it might reduce some RF, but in reality this will be purely by chance because we don't know exactly where the 1/4 wave will be. Move the "resistor" 1/4 of an inch and you will get a different response.
Now take that analyzer and connect something like a tripplite isobar, line cords and all with a varable termination. The isobar standard filters with real chokes, and MOV's will prove far losssier that the "power resistor". To it's benefit it will give some decent surge suppression, and low frequency RF attenuation where you really need it.
If microwave is an issue for household/consumer lines it will a radiated issue, not a conducted issue. Shielding will help, decent grounding practices will help, But if you think about any real power at microwave frequencies it should not be legal or allowed near any consumer or residence.
Now, for those of you who have their audio systems next to radar transmitters....................................
Hope this helps;
d.b.
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Follow Ups
- Re: Thinking complete... - Dan Banquer 15:46:04 04/02/07 (3)
- Re: Thinking complete... - rick_m 17:55:20 04/02/07 (2)
- Think Marketing! - Dan Banquer 04:30:06 04/03/07 (1)
- Re: Think Marketing! - rick_m 07:04:48 04/03/07 (0)
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