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Online calculators

Tesla flat spiral coil:

This calculator uses J.C.Maxwell's coaxial circular filaments approximation, as well as multilayer inductor calculator.

on-line Tesla flat spiral coil calculator
Tesla flat pancake spiral coil calculator
ENTER THE INPUT DATA:
Select units:   AWG →   SWG → 


L – Required inductance
Di   – Coil Inner Diameter
d   – Wire Diameter  
s   – Gap between turns

Calculate
RESULT:
N – Number of turns
Do   – Coil Outer Diameter
Lth   – Length of wire
Clear all

 

This calculator also can be suitable for the calculation of spider coil. Tesla flat spiral coil calculator

 

There is the handbook formula for calculating flat coil  (Harold A. Wheeler):

L (uH) = r^2 * N^2 / (8 * r + 11 * w)

  • L = Inductance µH
  • r = average winding radius in inches
  • w = width of winding (in inches)
  • N = number of turns

 This formula is used in the calculators linking below.


Another calculators:

 

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Coil Winding Machine

US $187.53
The system consists of individual components including a controller, a stepping motor, a foot switch, power adapter and output shaft. This design makes it very easy for you to integrate the system into your own project.

LC Meter LC200A

US $37.99
Measuring Capacitance Range:
0.01 pF - 100mF
Measuring Inductance Range:
0.001 uH - 100H
Measurement accuracy:1%.

RF Inductors

US $6.43
Variable Ferrite Core Inductor coil set 3.5Turns 25-100MHZ

Auto Ranging LCR Meter

US $63.07
Meter can measure 0.00pF to 100.00mF capacitance, 0.000uH to 100.00H inductance and 0.00? to 10.000M? resistance. Very suitable for small value capacitor and inductor measurement.

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