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--- simple_electrostatic_simulation_in_femm_-_step-by-step_tutorial [2021/05/11 21:40]
stanzurek [Step 15 - plot data along line]
+++ simple_electrostatic_simulation_in_femm_-_step-by-step_tutorial [2021/05/11 22:08] (current)
stanzurek [Step 19 - that's it!]
@@ Line 42: / Line 42: @@
 {{enter_point.png}} Fig. 3-2. Entering point with coordinates (0,0)
-Click on the ''Zoom extents'' button (Fig. 3-3), which is the third one (white rectangle with a magnifying glass). (//If not sure - hover a mouse over the buttons and see their description in the botoom left of the FEMM window.//)
+Click on the ''Zoom extents'' button (Fig. 3-3), which is the third one (white rectangle with a magnifying glass). (//If not sure - hover a mouse over the buttons and see their description in the bottom left of the FEMM window.//)
 Then click on the ''Zoom out'' button once (magnifying glass with a minus).
@@ Line 226: / Line 226: @@
 ----
-==== Step 16 - block integral ====
+==== Step 16 - line integral ====
-Some values can be integrated over the whole blocks. To select a block use the "green square" button, and then click anywhere within a block of interest, Fig. 16-1.
+Some values can be integrated over lines or blocks. Draw a line, and then chose the integral icon, Fig. 16-1.
-Then click on the "integral" icon.
+The calculated voltage is exactly -1 V, as defined in the conductors. Because the line was drawn from left to right, from "zero" to "positive", so the integral is evaluated correctly.
+{{el/line_integral_el.png?500}} Fig. 16-1. Select block
-{{block_integral1.png?500}} Fig. 16-1. Select block
-A pop-up window will appear (Fig. 16-2), and the drop-down list can be used to select the value of interest. After accepting, the value will be evaluated and shown in another pop-up window, Fig. 16-3.
-{{block_integral2.png}} Fig. 16-2. Select type of integral
-{{block_integral3.png}} Fig. 16-3. Calculated value of integral
 ----
 ==== Step 17 - conductor info ====
-The losses in the ciruict (energised coil) can be integrated with the block method described above, but much reacher information is provided with the "Circuit properties" icon, Fig. 17-1.
+Info about the given conductor with the "Conductor properties" icon, Fig. 17-1.
+If there is more than one conductor defined then it can be selected from the drop-down list.
-If there is more than one current/circuit defined then it can be selected from the drop-down list.
+Capacitance is charge over voltage, C = q/V, and because the voltage was set to 1 V, the capacitance of this capacitor is 3.6e-13 F, or 0.36 pF.
-{{conductor_info.png?600}} Fig. 17-1. Circuit properties
+{{el/conductor_properties_el.png?600}} Fig. 17-1. Conductor properties
 ----
@@ Line 257: / Line 257: @@
 If snap-to-grid is enabled then only the grid positions will be available.
-{{data_at_any_point.png}} Fig. 18-1. Click anywhere to get values
+{{el/point_props_el.png}} Fig. 18-1. Click anywhere to get values
 ----
@@ Line 263: / Line 263: @@
 ==== Step 19 - that's it! ====
-And that's all - now you can run a simple FEMM magnetics simulation!
+And that's all - now you can run a simple FEMM electrostatic simulation!
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Unofficial FEMM documentation by Dr Stan Zurek

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Unofficial
FEMM
documentation
by Dr Stan Zurek