The inductance of a flat or ribbon wire or a track on a pcb can be calculated with the following equation.
Calculating inductance of flat sheet of copper.
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.
The dc resistance of a conductor is calculated using the equation where.
Width of the conductor mm t.
This formula applies at low frequencies 30mhz using enameled copper wire.
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.
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.
D d loop diameter.
Lcoil l c o i l inductance of the coil in henries h n 2 n 2 number of turns.
If dimension unit is mils then dimension is 0 0254.
Even a single straight piece of wire has some inductance.
Using the coil inductance calculator.
ρ is the resistivity of the conductor in ω m.
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.
We generally associate inductance with a loop or coil of wire.
μr μ r relative permeability.
Copper is not a perfect conductor.
On the contrary wires have a certain amount of resistance that increases with length and decreases with diameter.
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Resources eis inductance calculator.
L is the length in metres.
μ0 μ 0 permeability of free space 4π 10 7.
Enter the coil length measured as depicted in the diagram above.
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.
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.
Length of the conductor mm w.
1 inch 0 0254m 2 54cm 25 4mm.
Some people call it magnet wire.
Thickness of the conductor mm.
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.
One formula for inductance is as follows.
D d wire diameter.
