Concentric PCB Induction Balanced Coil for Metal Detectors

A

Aziz

Guest
Concentric PCB Induction Balanced Coil for Metal Detectors

Hello,

I am using a concentric printed circuit induction balanced coil (ca.
20 cm diameter) for a metal detector and had phantastic measuring
results:
- very low temperature dependency (size invariant design)
- very thin dimension (ca. 3 mm)
- very easy to build (just making a pcb-board)
- no balancing needed (computer designed geometry - thus automatically
balanced)
- most of the area is for the rx-coil
- combined small rx and big rx-coil (due to the geometry, the rx-coil
is a spiral from the inner side to the outher side)
- bigger transforming effect (nummer of turns for rx-coil is much more
then for the tx-coils), to reduce the gain of the amplifier, thus
reducing also noises of the amplifier.

Therefore, it is very sensitive even to small metal objects (nuggets).

Attention:
By disclosuring of such an induction balance PCB coil now, it is not
any more possible to patent such pcb ib-coils. Especially, this kind
of pcb-ib-coils containing four coils, big receiver coil area, 1
winding ground balancing/fine balancing coil, transmitting coil and
canceling coil.
Disclosure Date and Time:
First Disclosure: 4. March 2005, 10:08 MEZ
Updated: 10. March 2005, 15:01 MEZ

If you want to the the sensor (search coil), just follow the link
below:
http://ibcoils.tripod.com/album/index.album?i=0&s=1

original image:
http://ibcoils.tripod.com/album/wien2.GIF

Some details:
20 cm diameter
600 DPI Resolution

from the inner coils numerated
- rx-coil
- canceling-coil
- one winding coil for special use (ground balancing coil / fine
balancing)
- tx-coil

Aziz

PS: May be your browser cannot show such a big image. Just download
the image and use an image-viewer.
 
Aziz wrote:
[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]

original image:
http://ibcoils.tripod.com/album/wien2.GIF
Click to expand...
You need to test links before posting them.
You can't deep-link to anything on Tripod.
 
On Thu, 10 Mar 2005 13:53:35 -0800, JeffM wrote:

Aziz wrote:
[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]

original image:
http://ibcoils.tripod.com/album/wien2.GIF

You need to test links before posting them.
You can't deep-link to anything on Tripod.
Click to expand...
It works for me.

Thanks,
Rich
 
On Thu, 10 Mar 2005 22:32:48 GMT, the renowned Rich Grise
<richgrise@example.net> wrote:

On Thu, 10 Mar 2005 13:53:35 -0800, JeffM wrote:

Aziz wrote:
[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]

original image:
http://ibcoils.tripod.com/album/wien2.GIF

You need to test links before posting them.
You can't deep-link to anything on Tripod.

It works for me.

Thanks,
Rich
Click to expand...
Me too.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
On Thu, 10 Mar 2005 17:47:27 -0500, Spehro Pefhany
<speffSNIP@interlogDOTyou.knowwhat> wrote:

On Thu, 10 Mar 2005 22:32:48 GMT, the renowned Rich Grise
richgrise@example.net> wrote:

On Thu, 10 Mar 2005 13:53:35 -0800, JeffM wrote:

Aziz wrote:
[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]

original image:
http://ibcoils.tripod.com/album/wien2.GIF

You need to test links before posting them.
You can't deep-link to anything on Tripod.

It works for me.

Thanks,
Rich

Me too.


Best regards,
Spehro Pefhany
Click to expand...
This works for me:
http://ibcoils.tripod.com/album/index.album?i=0&s=1

But view full- size image
http://ibcoils.tripod.com//album/wien2.GIF
does not




Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca
 
Boris Mohar wrote:
This works for me:
http://ibcoils.tripod.com/album/index.album?i=0&s=1

But view full- size image
http://ibcoils.tripod.com//album/wien2.GIF
Click to expand...

http://ibcoils.tripod.com/album/wien2.GIF ?

does not

Regards,

Boris Mohar

Got Knock? - see:
Viatrack Printed Circuit Designs (among other things) http://www.viatrack.ca
Click to expand...

--
?

Michael A. Terrell
Central Florida
 
JeffM wrote:
Aziz wrote:

[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]
Click to expand...
So where's the schematic? Or the complete article? There are only pictures and
as Jeff put it, blather. Very confusing. Concentric rings on a PCB... sounds an
awful lot like a Flux Capacitor... careful, it might warp right off your desk!
 
In article <R66dnTKOAcrHOKzfRVn-gw@buckeye-express.com>,
Mark Jones <abuse@127.0.0.1> wrote:
JeffM wrote:
Aziz wrote:

[blather about this demonstrating prior art for
Concentric PCB Induction Balanced Coil for Metal Detectors]


So where's the schematic? Or the complete article? There are only pictures and
as Jeff put it, blather. Very confusing. Concentric rings on a PCB... sounds an
awful lot like a Flux Capacitor... careful, it might warp right off your desk!
Click to expand...
The performance statements are a little light on numbers too. How far can
it see a 10 penny nail? How far can it see a soda can?

BTW: Metal detects see modest sized objects to depths of about 2 times
the diameter of the head at best. Very large objects such as burried
solid copper box car can be seen a little deeper.


--
--
kensmith@rahul.net forging knowledge
 
I read in sci.electronics.design that Ken Smith
<kensmith@green.rahul.net> wrote (in <d0sbpm$6ds$3@blue.rahul.net>)
about 'Concentric PCB Induction Balanced Coil for Metal Detectors', on
Fri, 11 Mar 2005:

Very large objects such as burried
solid copper box car can be seen a little deeper.
Click to expand...
I suppose they are very common in USA.
--
Regards, John Woodgate, OOO - Own Opinions Only.
The good news is that nothing is compulsory.
The bad news is that everything is prohibited.
http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
 
In article <DYKVQZGNjbMCFwDj@jmwa.demon.co.uk>,
John Woodgate <noone@yuk.yuk> wrote:
I read in sci.electronics.design that Ken Smith
kensmith@green.rahul.net> wrote (in <d0sbpm$6ds$3@blue.rahul.net>)
about 'Concentric PCB Induction Balanced Coil for Metal Detectors', on
Fri, 11 Mar 2005:

Very large objects such as burried
solid copper box car can be seen a little deeper.

I suppose they are very common in USA.
Click to expand...
Yes they often show up in such discussions on this side of the Pond.

--
--
kensmith@rahul.net forging knowledge
 
Boris Mohar wrote:
But view full- size image
http://ibcoils.tripod.com//album/wien2.GIF
does not
//
Click to expand...
Entered by hand rather than cut and paste?
Try getting rid of one slash.

Ted
 
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