Length of the conductor mm w.
Calculating inductance of flat sheet of copper.
Strap inductance 0 2 l in 2 l w t 0 223 w t l 0 5 dimension where l length w width t thickness if dimension unit is mm then dimension 1.
Lcoil n 2μ0μr d 2 ln 8d d 2 l c o i l n 2 μ 0 μ r d 2 l n 8 d d 2 where.
Thickness of the conductor mm.
μ0 μ 0 permeability of free space 4π 10 7.
Where l is the length in cm w is the width in cm t is the thickness in cm pcb copper 1 oz ft2 0 035mm.
Some people call it magnet wire.
The dc resistance of a conductor is calculated using the equation where.
Lcoil l c o i l inductance of the coil in henries h n 2 n 2 number of turns.
L inductance u r relative permeability of the core material air 1 turns number of turns on the coil area the cross sectional area of the core in square meters including some of the coil as shown in the diagram length length of the coil in meters.
Select the geometry of your coil from the list.
Even a single straight piece of wire has some inductance.
You can choose from single layer solenoid multi layer solenoid and flat spiral coil forms.
Enter the coil diameter measured as depicted in the diagram above.
Enter the coil length measured as depicted in the diagram above.
If dimension unit is mils then dimension is 0 0254.
Inductance of the conductor μh ell.
D d wire diameter.
The inductance of a flat or ribbon wire or a track on a pcb can be calculated with the following equation.
On the contrary wires have a certain amount of resistance that increases with length and decreases with diameter.
This formula applies at low frequencies 30mhz using enameled copper wire.
If we wind a wire into a coil it obviously creates inductance but even a straight piece of wire or a component lead has some parasitic inductance caused by the magnetic field that it creates.
L is the length in metres.
Copper is not a perfect conductor.
A flat spiral coil is a type of an air core inductor usually incorporated in the primary of a tesla generator rfid tag and proximity detectors.
μr μ r relative permeability.
1 inch 0 0254m 2 54cm 25 4mm.
However even a straight piece of wire or your electrode has some self inductance this can be important if you are dealing with low impedances 1 ohm at high frequencies 10khz.
For more information see about our calculators.
D d loop diameter.
ρ is the resistivity of the conductor in ω m.
One formula for inductance is as follows.
Using the coil inductance calculator.
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