- Joined
- Jul 1, 2006
- Location
- Canton, CT
what is this??
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EMI Ring Filter???
- Thread starter enz660
- Start date
what is this??
- Joined
- Jul 21, 2006
- Location
- CYYZ Pearson
I have hundreds of those all over the place and have yet to find a use for them. 
They're just made to stop EM radiation(mostly RF) from leaking off wires and affecting other sensitive things nearby... I think... something like that... ya.
I don't bother with them since they're no match when put up against 16 gauge, de magnetized steel hex-mesh.
They're just made to stop EM radiation(mostly RF) from leaking off wires and affecting other sensitive things nearby... I think... something like that... ya.
I don't bother with them since they're no match when put up against 16 gauge, de magnetized steel hex-mesh.
- Joined
- Dec 24, 2001
- Location
- Shasta Lake, California
You mean one of these?
http://en.wikipedia.org/wiki/Ferrite_choke
http://en.wikipedia.org/wiki/Ferrite_choke
- Joined
- Nov 6, 2003
Gnufsh said:
same thing petty much, its normaly a knot over the ring or even just a knot.
We use them in the school for a few phone lines. one of our phonesystems are very sensstive to noise in the wire.. so we try to make it clear as possable.
- Joined
- Jan 14, 2003
- Location
- Parma, OH
You run all the wires from the front control panel thru the ring.
- Joined
- Aug 30, 2004
- Location
- Santa Barbara, CA
That looks like a Ferrite ring. All EM energy beyond the ring's passband (freq cut off limit) is converted to heat. It is quite a useful device when temperature sensitivity is not an issue. You can cut off most of the annoying 60 Hz pickup.
- Joined
- Jul 21, 2006
- Location
- CYYZ Pearson
You stick it to Analogue or DC cables to drown out interference and convert it to heat.Maviryk said:
I have no use for them, but if you have any dirty EMI in the air they will help.
Definately helpful if you have lots of AV stuff next to a transformer... damn the guy who designed my school was a fool... the main transformer is RIGHT next to a Computer lab.
- Joined
- Aug 30, 2004
- Location
- Santa Barbara, CA
A line noise device is a filter, the ferrite ring is a passive quasi-shielding device. A line noise filter is usually an isolation transformer with possibly an active filter combination.
You just slip the ferrite ring over the power cable and you are good to go.
You just slip the ferrite ring over the power cable and you are good to go.
- Joined
- Dec 13, 2005
Just do what I do. Dont use lights, tvs, radios, just leave the only thing on within 100 feet of your computer the computer itself.
- Joined
- Aug 30, 2004
- Location
- Santa Barbara, CA
freakdiablo said:
Every component in your computer has to be certified and abide by FCC EMI/EMC (Electromagnetic interference/compatability) emission/suseptibility regulations. The gist of which necessitates tolerence to common low frequency RF sources. So, you don't have to turn off your lights etc.
- Joined
- Dec 13, 2005
I know, but I like doing it anyway. Looks more bad A$$ when playing fear at max volume with a couple of those sound activated cold cathodesSuper Nade said:
