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--- calculator:inductance_of_straight_round_magnetic_wire [2025/02/02 21:31] – stan_zurek
+++ calculator:inductance_of_straight_round_magnetic_wire [2025/02/08 16:32] (current) – stan_zurek
@@ Line 14: / Line 14: @@
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-[[/Inductance]] of a [[/straight wire]] or conductor made from [[/magnetic material]] with round (circular) cross-section can be calculated withe the equation as specified below.
+[[/Inductance]] of a [[/straight wire]] or conductor made from [[/magnetic material]] with round (circular) cross-section can be calculated with the the equation as specified below.
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     <br><br>
-<b><i>L</i></b> = <input type="text" name="result1" size="10" maxlength="10">
+<b><i>L<sub>DC</sub></i></b> = <input type="text" name="result1" size="10" maxlength="10">
           <SELECT name="result1_unit" onChange="calculate_function(this.form)">
            <OPTION value="1">(H)</OPTION>
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-//Note: Several assumptions are made for all these equations: 1) The return path is **not** considered so the total inductance of the complete circuit can be significantly different. 2) The length of the wire is assumed to be significantly longer than it radius (r << l), and for r ≈ l the calculation errors might be excessive. 3) The surrounding medium is assumed to be non-magnetic (μ<sub>r</sub> = 1). 4) The current is uniformly distributed inside the wire (no [[/skin effect]]). 5) The equations were converted here to be consistent with [[/SI units]].//
+//Note: Several assumptions are made for all these equations: 1) The return path is **not** considered so the total inductance of the complete circuit can be significantly different. 2) The length of the wire is assumed to be significantly longer than it radius (r << l), otherwise the errors might be excessive. 3) The surrounding medium is assumed to be non-magnetic (μ<sub>r</sub> = 1). 4) The current is uniformly distributed inside the wire (no [[/skin effect]]). 5) The equations were converted here to be consistent with [[/SI units]].//
 </WRAP>
-<WRAP lo>
 ^  Inductance of a straight round magnetic wire or conductor  ^^^
 | // Sources: [1] Edward B. Rosa, The self and mutual inductance of linear conductors, Department of Commerce and Labor, Bulletin of the Bureau of Standards, Volume 4, 1907-8, Washington, 1908, \\ [2] F.W. Grover, Inductance Calculations: Working Formulas and Tables, ISA, New York, 1982, ISBN 0876645570//  |||
 |  **(1)** \\ //[1] Rosa, eq. (11), p. 305// \\ and //[2] Grover, eq. (8), p. 35//  |  $$ L = \frac{μ_0 ⋅ l}{2⋅π}⋅\left( ln \left( \frac{2⋅l}{r} \right) - 1 + \frac{μ_r}{4} \right) $$  |  (H)  |
 | where: $μ_0$ - [[/magnetic permeability of vacuum]] (H/m), $l$ - wire length (m), $r$ - wire radius (m), $μ_r$ - [[/relative magnetic permeability]] of the wire (unitless)   |||
-</WRAP>
 <box 100% #efffef>↑</box>
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-{{tag>Calculators Inductance_of_straight_wire Inductance_of_straight_conductor}}
+{{tag>Calculators Inductance_of_straight_wire Inductance_of_straight_conductor Inductance_of_magnetic_wire Inductance_of_magnetic_conductor}}