Use of ferrite beads / core on screened cables - diyAudio
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Old 24th May 2011, 12:37 PM   #1
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Default Use of ferrite beads / core on screened cables


I have some ferrites, 10mm i/d, 14mm o/d, 20mm long.
A screened cable can easily pass thru it, or i can loop it one time.
Some tests i did showed it did not help with hum pickup (cable near a txmfr)
Is there any benefit to using one?
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Old 24th May 2011, 12:51 PM   #2
sesebe is offline sesebe  Romania
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Location: Iasi
It will help only at very high frequency (10's-100MHz)
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Old 24th May 2011, 01:37 PM   #3
DF96 is offline DF96  England
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Join Date: May 2007
It might stop interference from your mobile phone, the broadcast transmitter a few miles away, the CFL a few feet away, and the radio amateur or taxi firm just over the road.
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