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-   -   possible "seismic" sensor (http://www.diyaudio.com/forums/class-d/88091-possible-seismic-sensor.html)

classd4sure 11th October 2006 02:34 PM

possible "seismic" sensor
 
http://www.freepatentsonline.com/7064530.pdf

Picture the coils being part of the PCB

IVX 11th October 2006 05:18 PM

BTW, did you see something with Lars's amp, when north korean bomb exploded? :)

classd4sure 11th October 2006 05:22 PM

No, it wasn't plugged in. :cannotbe:

koolkid731 12th October 2006 12:48 AM

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.

classd4sure 12th October 2006 12:53 AM

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.

alfsch 19th October 2006 11:20 AM

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" ?

alfsch 20th October 2006 12:44 AM

2 Attachment(s)
...found a "Piezoelectric Measurement on Ceramic Multilayer Capacitors"
on scope:

pinkmouse 20th October 2006 12:49 AM

Possible "seismic" sensor

:)


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