northwest Another coil question for Aziz
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see: The SDC2300 litany of problems and design flaws.
QED is here! ML have NOT stopped the QED!
Goldsearch Australia has been appointed the Australian Distributor for the QED. QED info on the Goldsearch website has been updated.
This is the only forum where you can talk directly with the designer/ manufacturer of the QED and  also some very experienced QED users.
Jrbeatty and Reg Wilson  and  Yellowfin have NO vested  or pecuniary interests(or secret deals or cash for comment or any other undisclosed benefits )in the QED other than using it to find gold which it is doing very successfully!
Over the overwhelming majority of typical Gf ground the QED GB works just fine! Another new user has used his QED over "fairly difficult ground around Waanyarra and Kooyoora areas  " and not reported any GB problems!
The so called QED GB problem is just  more fake news created by  some fake, delusional and dishonest imbecile cretins on another  "forum" The QED has been used successfully to detect under 300k steel tower transmission lines(try that with a gp/gpx  with a mono coil!!!) so it  can handle bad  EMI! The QED will also run quite and stable in a household with electrical appliances running.Try that with a ML with a mono coil!!! "QED matches and and in most cases outperforms the SDC"  and will thrash it for depth on bigger gold. QED sales are still strong so if you are on the waiting list please be patient as BW is working 12 hours a day to try and reduce the waiting time.
Except for the USB port the prototype QED's are identical in EVERY respect to the production models and according to the designer  the production models may even be  better!
4umer makes another liar a moderator! How low can 4umer go!

australian electronic gold prospecting forum.com  |  Detector Technology and Electronics and new detectors  |  Detector Coils  |  Topic: Another coil question for Aziz 0 Members and 1 Guest are viewing this topic. « previous next »
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Author Topic: Another coil question for Aziz  (Read 653 times)
6666
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« on: Tuesday March 10 2015 14:28:46 AEDT PM »

Hi Aziz

With all your coil testing over the years have you noticed this result?

Take any round mono PI coil, test it, then bend it into an oval shape,
does the oval shape then loose a bit of depth compared to being round
BUT being oval does it increase sightly in sensitivity to small objects ?

Thanks Aziz. 
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Aziz
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« Reply #1 on: Tuesday March 10 2015 17:27:53 AEDT PM »

  
Hi Aziz

With all your coil testing over the years have you noticed this result?

Take any round mono PI coil, test it, then bend it into an oval shape,
does the oval shape then loose a bit of depth compared to being round
BUT being oval does it increase sightly in sensitivity to small objects ?

Thanks Aziz. 


Hi 6666,

yes, if you bend a round mono coil into an elliptical (oval) shape coil, the bent coil must loose some depth and on the other hand, will increase its magnetic field strength at the shorter dimension.
The bent coil is just acting like an equivalent mono coil with the following diameter:
D = sqrt(W*H), where
W = width of the bent coil
H = height of the bent coil
D = diameter of the equivalent round coil

Cheers,
Aziz
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6666
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« Reply #2 on: Wednesday March 11 2015 16:11:47 AEDT PM »

Hi Aziz thanks for the reply much appreciated  smile
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