Ferritte ring from PC case

mk000000 · TweakNOOB Joined: 29 Dec 2004 Posts: 78 Location: Philly

Can someone refresh my memory to where the large ferrite ring is suppose to go in a new PC case? I know it goes around a wire for EMI shielding, just forgot which one... not that it makes a big difference anyway.
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mojo1340 · UberTweaker Joined: 19 Jun 2004 Posts: 1022

The front panel wires (on/off and reset switches, lights mostly) are wrapped around this ring. Fairly uncommon these days. You could probably leave it out, but it won't do any damage, either. Your call.

ToggleHead · TWEAKGURU Joined: 03 Mar 2004 Posts: 4360 Location: Jersey

what is its purpose again?
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mk000000 · TweakNOOB Joined: 29 Dec 2004 Posts: 78 Location: Philly

I know know one uses it... but this thing is about the size of a quarter, with a pretty large whole... if I used it for the front panel cords, it would definetly hang. But I wasnt planning on using it anyhow...

Toggle, Ferrite rings are used for EMI, electromagnetic interference... apparently ferrite a good shield for stopping this radiation... I think it's slightly magnetic, but I could be completely off... its the same material thats wrapped around practically all PCI-Express power cords at the end, for the same reason.

But using these rings are the same as using anti-static braclets, a precaution to a once in a lifetime chance.
_________________
AMD Opteron 175
ASUS A8N-SLI DELUXE
Corsair 2GB CMX1024-3200 CAS 2 LED
ASUS EN6600GT
ATI Theater 550 PRO
WD Raptor 74GB 10K RPM
3 x WD 320GB SATA150
Seagate 300GB 7200.8 SATA150
NEC DVDRW DL
Windows XP Professional x64
Dell 24" widescreen LCD