PCB IB-Coil

[Aziz]

Hello,

I am showing you one of my new pcb ib-coil. It is not yet tested. So do not start building. I will test the coil as soon as possible.

Attention:
By disclosuring of such an induction balance PCB coil now, it is not more possible to patent such pcb ib-coils. Especially, this kind of pcb-ib-coils.
Disclosure Date and Time:
4. March 2005, 10:08 MEZ

See my quick and dirty photo album now.
http://ibcoils.tripod.com/album/index.album?i=0&s=1

original size:
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
- tx-coil


Aziz

PS: May be your browser cannot show such a big image. Just download the image and use an image-viewer.



PCB-Coil

[Cossaro Fernando]

Re: PCB IB-Coil

Hey Boy,
your site is infected!!!!!!!!!!!

Please delete your link before someone try to "kill" you!!!


Downloader.Trojan is a program that downloads another malicious program from a remote Internet site and executes it on the local system.

Also Known As: TrojanDownloader.Win32.GetFiles [KAV], TrojanDownloader.Win32/Erom [RAV], Downloader.w [DRS]

Type: Trojan Horse
Infection Length: varies



Systems Affected: Windows 95, Windows 98, Windows NT, Windows 2000, Windows XP, Windows Me
Systems Not Affected: Macintosh, OS/2, UNIX, Linux

[Cossaro Fernando]

Re: PCB IB-Coil

>Hello,

>Attention:
>By disclosuring of such an induction balance PCB coil now, it is not more possible to patent such pcb ib-coils. Especially, this kind of pcb-ib-coils.
>Disclosure Date and Time:
>4. March 2005, 10:08 MEZ

The PCB coil is not new, If you try to patent this kind of coil, the next patent for you may be the circle (x^2 + y^2 = r^2) :-))

[Gary]

VIRUS? Re: PCB IB-Coil

Are you Sure, I didn't detect it.

[jackdetect]

Re: PCB IB-Coil

With such IB coil, it will be ground detector, not metal detector.

[Serg]

Re: PCB IB-Coil

Aziz, what for the program you used for reception of graphic models of a magnetic field? Prompt where to take or look this coll software.

[cyclops]

PROBABLE SPYWARE !!!

Confirmation!
See Fernando's 2nd message.
I had a first system crash under Win2K.
After a second (carefull attempt) I came to the same conclusion, there is a bug or at least there is something wrong (bad script).

[Aziz]

Re: PCB IB-Coil

Hi,

I developed this software by myself since 1994. I added since this time many functionality.
Since 1 1/2 year, I can compute balanced PCB-Coils.
It is based on Biot-Savart Law. A coil is broken into small peaces of linear wire. The whole magnetic field (3-Dimension) is the sum of all magnetic fiels of the small peaces of wires.
To compute a balanced coil is very time consuming process.

Aziz

[Aziz]

Re: PROBABLE SPYWARE !!!

Hi,

may be the provider (www.tripod.com) has some bugs or anything else. I did not edit the homepage. I just created the picture album.

Sorry, but I had to search one free provider to place my big images there.

Aziz

[Aziz]

Re: PCB IB-Coil

Hi,

yes of course, you are right. It detects even my hand, if the coil is unshielded. It detects a coil, that is not short circuited! Try this on the other metal detectors!
;-)
This is because, the coil is balanced well and I can amplify much more on my amplifier. It has more transforming effect (more rx-windings) and more sensing (detecting) area. Therefore it is too sensitiv, it needs some good processing unit to cancel the ground effects.

Nevertheless, the ground effects can be canceled in some propriate way.

Be aware: you can not attach this coil to common metal detectors on the market. A new electronics has to be developed for such coils.

I am just working on some solution for this.
I can tell you, that this detector will detect even very small metal objects (gold nuggets).

Aziz

[Gosho]

Re: PROBABLE SPYWARE !!!

http://www.nventure.net/img/
free easy uploader

[jackdetect]

Re: PCB IB-Coil

Such coil you can shield only with graphite.
But generally, problem will always exist. With such winding, ground will change capacitance of coils, and resonant frequency of coils. Any change of resonant frequency will change couple between Tx and Rx. It is not possible to reduce with electronic, in my opinion.
jackdetect.

[Aziz]

Re: PCB IB-Coil

Hi jackdetect,

yes, I am using for the shield graphite. Even graphit may cause changing in capacitance and coupling (balancing). It depends on the resistance of the shielding and distance (capacitor) from the coil. A high resistance (>10k) shield and small gap between the coil and shield (2-5 mm) brings good results. Too narrow shield gap may couse oscillations (if no resonant capacitor used).

I do not use this coil on one resonant frequency. There is no capacitor connected to the coil. Therefore this coil can be used in MF (multifreq.) or PI mode.

There is a way of canceling all the effects (out of balancing, small signal detection, phase change, ground effects, etc.) with the ground canceling coil (1 winding coil). But to do this, you need much more state of the art detector-electronics or do it with computer-power. Its not easy, but it is possible. I am working especially on this to develop a very new ground reject filter.

I made some measurements and have found that even the coils itself can bring the coil out of balance. This effect is small and I can live with. Others must also live with same effects.

I am working on a new coil with much more detecting area. I think also do a coil for magnetometers (without TX-Coils). This is generally also possible.

Regards,
Aziz

[Eric Foster]

Re: PCB IB-Coil

Hi Aziz,

Another possible solution is to use a pcb shield. I have used this successfully on a high sensitivity PI. It consisted of a series of parallel tracks 10 thou wide and 10 thou apart. These are all connected together by a single track down the middle or along one edge. This track is then grounded to the electronics. In my case, this shield formed the bottom layer in a four layer board. The other layers had the printed coils. You could, of course, have another one above the coil.

Eric.

[Aziz]

Re: PCB IB-Coil

Hi Eric,

I think, it is not a good idea to use a pcb shield (copper-planes). This would cause radically reduction in the sensitivity and of course, the pcb-coil would not be any more balanced.
The best shield for such a coil is graphite or low conductive polymere. I successfully tested such a pcb-coil with graphite shield.
Conductive polymere would be interesting to test it.
The great advantage of such a coil is, that it is very sensitive to small metal objects. Of course very sensitive to ground conditions and distortions (VLF radio stations, DC-DC-Converters nearby, etc.). So you need some trickle to process the signals.

Aziz