Are you trying to tell us that some of Robert Baer's technology is standards compliant and working correctly?
Truly an amazing thing... yet still he manages to complain about it.
:)
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6 years ago
Not sure about Manufacturers response
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6 years ago
At low frequencies, the Z-vs-F curve looks just like an inductor. At any point on that slope, X = omega*L.
At high frequencies, after the slope levels off, you sort of have R.
Most ferrite beads have base inductance in the 1 uH ballpark, order of magnitude.
-- John Larkin Highland Technology, Inc trk jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
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6 years ago
Most handheld LCR meters are wildly inaccurate on inductance, period.
-- John Larkin Highland Technology, Inc trk jlarkin att highlandtechnology dott com http://www.highlandtechnology.com
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6 years ago
OK, I see the problem, as my only impedance bridge is an AUDIO frequency one. Yes, if you put the ferrite on a 1MHz + bridge, then the losses in the ferrite will get quite significant, and it WILL have a true R component.
Jon
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6 years ago
The ferrite doesn't alter the R at all, all it adds
that is wrong
m- Vote on answer
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6 years ago
I made some measurements of ferrite bead impedance from 30kHz to 1GHz. There are a few small ferrite toroid cores thrown in as well. The difference is striking. The plots are at . Ask if you want the raw S11 data.
Jeroen Belleman
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6 years ago
e
Very interesting.
You probably know a lot of the links on your page are blocked.
formatting link
NT
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6 years ago
CERN used to be very open, but gradually more and more is getting blocked. I barely notice, because I'm inside. In the hostile and litigious atmosphere prevalent on the internet, it's understandable that we're getting more careful about what we show publicly. That's a pity, but unfortunately necessary.
Is there anything in particular that you wanted to see, but couldn't?
Jeroen Belleman
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6 years ago
thank you, but don't worry, I'm busier than I was now.
NT