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Old 11th October 2006, 01:34 PM   #1
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Default possible "seismic" sensor

http://www.freepatentsonline.com/7064530.pdf

Picture the coils being part of the PCB
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Old 11th October 2006, 04:18 PM   #2
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BTW, did you see something with Lars's amp, when north korean bomb exploded?
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Old 11th October 2006, 04:22 PM   #3
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No, it wasn't plugged in.
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Old 11th October 2006, 11:48 PM   #4
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Default Unbelievable

What is new with one or two current sensing transformers, and how is that new and not obvious?

One thing that may not be obvious is to use two transformers. But then it's a "combination" idea.

I don't understand the USPTO anymore.
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Old 11th October 2006, 11:53 PM   #5
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I only posted it to decipher a little marketing BS.

What's to understand? It's money driven, not based on novelty.

Anyway, a big fat corporate oinker like Intel probably patents every single resistor they use.
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Old 19th October 2006, 10:20 AM   #6
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ok, beside marketing or not :

the "sensor" might be a simple cap, ceramics like Z5U have piezo effects, or a piezo-sensor (?);
if there is a shot in the mosfets, probably a ultra-sonic noise is generated, and with a sensor for "mechanical" noise this could be measured.

>> ever heard a triac switching? with every current pulse ( = swiching on ) a "tick" can be heard, so this could be the same in mosfet at high current.

could you measure the cap aka "sensor" ?
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Old 19th October 2006, 11:44 PM   #7
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...found a "Piezoelectric Measurement on Ceramic Multilayer Capacitors"
on scope:
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File Type: gif cap_0608pd_question03.gif (9.7 KB, 86 views)
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Old 19th October 2006, 11:49 PM   #8
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Possible "seismic" sensor

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