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#1
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#2
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Who knows in what range the inductance of 3 turns is?
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#3
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I think less than 1 micro Henry.
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#4
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Your document mentions that the tr5 emitter output should reach 5v, but the use of double-sided large-area copper-clad PCBs cannot reach 5v, only about 2v, but it does not affect the sensitivity of electromagnetic field reception. So I think that the output voltage of tr5 has nothing to do with it.
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#5
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Quote:
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#6
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It is difficult to detect metals. I wonder if anyone in the world has ever succeeded?
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#7
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Quote:
https://www.youtube.com/watch?v=yR3tzT2Jd-g |
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