by cUIjIEjIANzHAN
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by cUIjIEjIANzHAN
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What are the factors related to the inductance of the aircore inductor? And what is its calculation formula?
1. The formula for calculating the inductance of the aircore inductor: First use a piece of paper to make a small cylinder, and then wind an inductance coil on the cylinder to make an aircore inductor. The calculation formula for the aircore inductance is: LmH)=(.08DD.N.N/(3D+9W+10H) 1. This can calculate the number of turns of the winding inductance:
Number of turns = [inductance * {(18* diameter of the turn (inch)) + (40 * length of the turn (inch)))]? Diameter of the turn (inch)
Number of laps = [8.116 * {(18*2.047) + (40*3.74)}]? 2.047 = 19 laps
According to the above points, the number of coils can be calculated:
Number of turns = [inductance * {(18* diameter of the turn (inch)) + (40 * length of the turn (inch)))]? Diameter of the turn (inch)
Number of laps = [8.116 * {(18*2.047) + (40*3.74)}]? 2.047 = 19 laps
Air core inductance calculation formula: L(mH)=(0.08D.D.N.N)/(3D+9W+10H)
D——coil diameter
N——number of coil turns
d—–wire diameter
H—coil height
W—coil width
2. Calculation formula of aircore inductance coil:
1. For circular CORE, the following formula can be used: (IRON)
L=N2. AL L= inductance value (H)
HDC=0.4πNI / l N= Number of coil turns (turns)
AL = inductance
HDC = DC magnetizing force I = passing current (A)
l= Magnetic circuit length (cm)
l and AL value, please refer to Micrometal comparison table. For example: Take T5052 material with 5 and a half coils, and its L value is T5052 (indicating OD is 0.5 inches), and its AL value is about 33nH after checking the table.
L=33．（5.5）2=998.25nH≒1μH
3. What are the factors related to the inductance of the aircore inductor?
1. The inductance of the aircore inductor mainly depends on factors such as the number of turns of the coil, the magnetic flux of the permeable magnet and the winding method. How to increase the inductance? Inductance L=N squared/Magnetic resistance Rm.
1. The inductance of the aircore inductor mainly depends on factors such as the number of turns of the coil, the magnetic flux of the permeable magnet and the winding method. How to increase the inductance? Inductance L=N squared/Magnetic resistance Rm.
1: Reduce the length of the coilmake the coils tightly arranged
2: Increase the coil area (note that it is not the wire area).
3: Increase the permeabilityreplace the magnetic core (you can check the table to know the relative permeability of a certain material)
Summary: What factors are related to the inductance of the aircore inductor above? I hope to be helpful!
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