and youll need coil inductance and more for your coils.. Coil inductance Calculator
thats the nice and free one :
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http://www.dxzone.com/cgi-bin/dir/jump2.cgi?ID=26663
Posted on: February 18, 2015, 10:45:16 am
2. and we add more PCB design softwares
ZenitPCB
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http://www.zenitpcb.com/
A great tool to create professional printed circuit boards. It is flexible and an easy to use CAD program which allows you to create your project in a shorter time frame. ZenitPCB is completely freeware for personal or semi-personal use, limited to 800 pins, which is the distinction between a hobby and a professional job.
FreePCB
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http://www.freepcb.com/
This is a free, open-source PCB editor for Microsoft Windows, released under the GNU General Public License. It was designed to be easy to learn and use, while being capable of professional-quality work. FreePCB doesn’t have a built-in autorouter, but it can use the FreeRoute web-based autorouter.
TinyCAD
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http://sourceforge.net/projects/tinycad/files/
TinyCAD is an open source schematic capture program for Microsoft Windows. It comes with symbol libraries to get you started quickly. Able to simply print your designs, you can also use TinyCAD to publish your drawings by copying and pasting them into a Word document or save them as a PNG bitmap for the Web.
Osmond PCB
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http://www.osmondpcb.com/
Osmond PCB for Macintosh allows you to design boards of any size and shape with as many layers as you choose. The resolution of 10 nanometers gives you all the precision you need. You can place parts anywhere on the board with any orientation and run traces of any width along any path and at any angle.
BSch3V
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http://www.suigyodo.com/online/e/index.htm
BSch stand for “Basic Schematic”, the program is designed to run on Windows and it has only basic functions in order to simplify the operation.
ExpressPCB
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http://expresspcb.com/
This free PCB software is easy to learn and use for beginners who are designing circuit boards, while being efficient enough for a professional.
Kicad
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http://www.kicad-pcb.org/display/KICAD/KiCad+EDA+Software+Suite
An open source (GPL) software for the creation of electronic schematic diagrams and PCB artwork. It can be used by anyone working in electronic design, including schematic diagrams and Printed Board up to 16 layers.
gEDA
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http://pcb.geda-project.org/
This software runs on Linux and has created tools used for electrical circuit design, schematic capture, simulation, prototyping and production. The gEDA project offers a variety of free software applications for electronic design, including schematic capture, attribute management, bill of materials (BOM) generation, netlisting into over 20 netlist formats, analog and digital simulation, and printed circuit board (PCB) design layout.
Eagle i shared offical link that software upper posts..
A powerful and affordable schematic capture and PCB design software package. CadSoft offers user friendly, powerful and affordable solutions for PCB design, including Schematic Capture, Board Layout, and Autorouter.
DesignSpark PCB
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http://www.rs-online.com/designspark/electronics/eng/page/designspark-pcb-home-page
With unlimited schematic sheets per project, up to 1M squared of board size and no limits on layers, which allow you to get your creativity flowing without restraints. The software can be used for schematic capture, PCB board design & layout, generating impressive 3D View to visualise your design in real time and generating manufacturing files.
Posted on: February 18, 2015, 10:51:39 am
and this ones important for WHO need coils and make your own coils...
Common pulse induction search coils with their physical properties
Size Shape Turns Wire size Inductance Resistance
Ø 120 mm Round 36 Ø 0.40 mm / 0.14 mm2 405 µH 1.9 Ohm
Ø 150 mm Round 31 Ø 0.40 mm / 0.14 mm2 394 µH 2.0 Ohm
Ø 175 mm Round 28 Ø 0.40 mm / 0.14 mm2 387 µH 2.1 Ohm
Ø 200 mm Round 26 Ø 0.40 mm / 0.14 mm2 406 µH 2.2 Ohm
Ø 250 mm Round 22 Ø 0.40 mm / 0.14 mm2 380 µH 2.3 Ohm
Ø 300 mm Round 20 Ø 0.50 mm / 0.20 mm2 390 µH 1.6 Ohm
Ø 400 mm Round 17 Ø 0.50 mm / 0.20 mm2 396 µH 1.8 Ohm
Ø 500 mm Round 15 Ø 0.50 mm / 0.20 mm2 400 µH 2.0 Ohm
1.0 x 1.0 m Square 10 Ø 0.66 mm / 0.34 mm2 406 µH 2.0 Ohm
1.4 x 1.4 m Square 8 Ø 0.66 mm / 0.34 mm2 387 µH 2.2 Ohm
1.8 x 1.8 m Square 7 Ø 0.80 mm / 0.50 mm2 398 µH 1.7 Ohm
The values in this table are theoretical and can vary depending on the way the coils are created. Especially the inductance can vary significantly with even small changes in the distance between the wires. You shouldn't be affraid of that. The coil will function well, even if the inductance differs 10 or 20% from the values mentioned here. The circular coils should be created from enamelled copper wire. The sizes 0.14mm2 and 0.20mm2 are common thicknesses and should be available at every larger electronics shop or via mail order. The square coils are created from multiwire data cables. Multiwire cables 10x0.34mm2, 8x0.34mm2 and 7x0.50mm2 are manufactured by companies like Unitronic to connect sensors in industrial applications
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