It's a bit interesting to get into.=20
I've been waiting two weeks now to get access to the yahoo group, but not h=
olding my breath.=20
To me, the LUA scripting is the most useful.  I'm looking at modeling indiv=
idual turns on a ferrite inductor with 30 to 60 turns in the primary, six i=
n the secondary, and looking at core loss, eddy current loss etc.

The scripting examples I have seen are not very clear and I don't think the=
y are good teaching examples.

Here's how I create an object in LUA.  I set my sim to millimeters and then=
 define:



mm =3D 1
Inch =3D 25.4 -- so that I can dimension in native units like "CoreLen =3D =
(6 * Inch)"  etc.

FRN and FRP are "FerriteRadiusNegative" (0 in the special case of the ferri=
te) =20
FLN and FLP are "FerriteLengthNegative" and "FerriteLengthPositive"
These describe the corners of the rectangle which will become the ferrite.

-- ASSIGN THE GROUPS  -----------------------------------------------------=
------------------------------------------------
AirGroup			=3D 0					-- Group 0 is air
FerriteGroup	 		=3D 1					-- Group 1 is ferrite core
-- and so on.. for all your objects.  Nothing special about the group numbe=
rs, could be 33 or 7.. It's just a tag.

-- Materials --------------------------------------------------------------=
-------------------------------------------------
FerriteMaterial       =3D "Soft magnetic ferrite (Fe-Ni-Zn-V)" 		-- adjust =
as needed.
--FerriteMaterial       =3D "Pure Iron" 		-- adjust as needed.
-- These names are pulled from the materials library
- This section just assigns "FerriteMaterial" the proper string value for u=
se later.
---------------------------------------------------------------------------=
-------------------------------------------------

-- Library materials used in this simulation ------------------------------=
-------------------------------------------------
mi_getmaterial('Air')
mi_getmaterial(FerriteMaterial) 	-- Assigned to a library material or custo=
m material above
--mi_modifymaterial can be used to change the BH curve etc.
---------------------------------------------------------------------------=
-------------------------------------------------------

-- Create the ferrite core ------------------------------------------------=
-------------------------------------------------
-- Define this first because the air size and label position is dependent o=
n this
FerriteLen 				=3D (66 * mm)
FerriteDia 				=3D 12=20
FerriteRad 				=3D (FerriteDia/2)
FRN					=3D 0  				-- Ferrite Radius Negative (because the ferrite is on th=
e axis of symmetry!)
FRP					=3D FerriteRad			-- Ferrite Radius Positive
FLN					=3D (-1 * (FerriteLen/2))		-- Ferrite Length Negative
FLP					=3D ( 1 * (FerriteLen/2))		-- Ferrite Length Positive
---------------------------------------------------------------------------=
------------------------------------------------

-- Define the ferrite core (Group 1) --------------------------------------=
-------------------------------------------
if (EnableFerriteCore > 0) then
	print("Creating Ferrite Core") -- output to console for debug

	-- Define where the label will go, insuring it's always inside the geometr=
y.
	FLAX		=3D(FRP/2) -- Special case, because the ferrite is on the axis of sy=
mmetry
	FLAY		=3D(FLP/2) --=20
	-- The label has to be inside the block, wherever you position the block.

	-- Create the nodes for the corners
	mi_addnode(FRN,FLP)
	mi_addnode(FRP,FLP)
	mi_addnode(FRP,FLN)
	mi_addnode(FRN,FLN)

	-- Select those nodes
	mi_clearselected()
	mi_selectnode(FRN,FLP)
	mi_selectnode(FRP,FLP)
	mi_selectnode(FRP,FLN)
	mi_selectnode(FRN,FLN)
	mi_setnodeprop('',FerriteGroup)

	-- Everything needs a group number so you can manipulate as a group

	-- Add the segments between the nodes
	mi_addsegment (FRN,FLP,FRP,FLP) -- top
	mi_addsegment (FRP,FLP,FRP,FLN) -- right
	mi_addsegment (FRP,FLN,FRN,FLN) -- bottom
	mi_addsegment (FRN,FLN,FRN,FLP) -- left

	-- Now instead of just corner points we have corners and lines.

	-- Set the segment properties
	mi_clearselected()
	mi_selectsegment (FRN,FLP,FRP,FLP)
	mi_selectsegment (FRP,FLP,FRP,FLN)
	mi_selectsegment (FRP,FLN,FRN,FLN)
	mi_selectsegment (FRN,FLN,FRN,FLP)
	mi_setsegmentprop('',0,0,0,FerriteGroup)

	-- Now the lines are part of the group and FEMM will see this as an object

	-- Create a label
	mi_addblocklabel(FLAX,FLAY)
	mi_clearselected()
	mi_selectlabel(FLAX,FLAY)

	mi_setblockprop(FerriteMaterial,AutoMeshCore,MeshSizeCore,0,0,FerriteGroup=
,0)
	-- FerriteMaterial is a variable and could be "Air" to turn off the ferrit=
e, or "Pure Iron" or any other material=20
	-- in the library or that you care to define.
	-- AutoMeshCore and MeshSizeCore are variables I added to control the mesh=
ing.

end -- EnableFerriteCore

mi_clearselected()

--=20
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