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January 21st, 2015, 01:55 PM | #1 |
Inner Circle
Join Date: Jul 2002
Location: Albany, NY 12210
Posts: 2,652
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Removing ferrite balls from power cables
I know those ferrite balls on your power cables are supposed to prevent electromagnetic interference, but I still hate them. They're heavy and they screw up my cable wrapping and storage system. Do they really make a difference or can I just rip the darn things off with a pair of pliers or something?
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January 21st, 2015, 06:29 PM | #2 |
Wrangler
Join Date: Sep 2001
Location: Northern VA
Posts: 4,487
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Re: Removing ferrite balls from power cables
They are intended to suppress high frequency noise that can propagate in on power, monitor, and data leads. If you remove them you may find unwanted noise in your audio or video - or someone else nearby may. No mfgr. would include them (it costs money to do so) if they served no useful purpose. If you remove them you may be OK, or you may find you need to reinstall them.- all depending you your specific applications.
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dpalomaki@dspalomaki.com |
January 22nd, 2015, 07:57 AM | #3 | ||
Trustee
Join Date: Aug 2007
Location: Portland, Oregon
Posts: 1,238
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Re: Removing ferrite balls from power cables
Quote:
If you are talking about generic IEC power cords, just throw the inconvenient ones in a box and use a generic one without the filters. If you are talking about low-voltage leads from external power supplies, that is a different matter. Typically, you can't simply remove the filter lumps. Aid it wouldn't be advisable, either. Gear with external power supplies are more vulnerable to interference entering through the power lead. Quote:
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January 22nd, 2015, 04:40 PM | #4 |
Inner Circle
Join Date: Nov 2005
Location: Lowestoft - UK
Posts: 4,044
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Re: Removing ferrite balls from power cables
I think the key feature is that the manufacturers stick them on to ensure they can label the product as EM compliant, but the size means they're rarely that effective. You can buy them to retro fit, so why not chop it off, test it, and if you get induced hums and buzzes, replace it with a new one!
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