Dirtfishn350
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Why and when would a in line FILTER be needed?
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- Thread starter Dirtfishn350
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They act as low pass filters in that they help prevent higher frequency signals in the wires from getting past. We use them on communication lines for robotics at work but I can't see how it would help for a metal detector. My 2cents.
http://metaldetectingforum.com/showthread.php?t=53291
http://metaldetectingforum.com/showthread.php?t=53291
Here are some examples, $2 or less surplus. Some of them give specs on what frequencies they work with. All are in the MHz range, metal detectors are in the Khz range, 1/10th or less. Not sure what the Ebay guys are asking for these, but last time this came up, it was $12-$15, plus shipping (of course).
http://www.allelectronics.com/make-a-store/category/235/Ferrites/1.html
For me, I don't see how they could have any effect at all, except the weight of your wallet. $2 each surplus, usually means 50 cents or so in large quantities. I'd have to believe if they worked even a little, for some areas or environments, detector makers would have been using them for a while, simple cheap advantage over competitor's machines.
http://www.allelectronics.com/make-a-store/category/235/Ferrites/1.html
For me, I don't see how they could have any effect at all, except the weight of your wallet. $2 each surplus, usually means 50 cents or so in large quantities. I'd have to believe if they worked even a little, for some areas or environments, detector makers would have been using them for a while, simple cheap advantage over competitor's machines.
