[TowerTalk] OT: Inductor Calculator
jimlux
jimlux at earthlink.net
Wed Feb 27 09:20:40 EST 2019
On 2/26/19 9:06 PM, Gedas wrote:
> Once upon a time I found a site that had an awesome online calculator
> for calculating the inductance of single layer coils where you could
> specify an insulated wire like #14 THHN along with coil dia, length, etc.
>
> Does anyone have a URL for that or something similar? TU !
>
Wheeler formula:
L(uH) = R^2 * N^2 / (9 * R + 10 * L)
R = coil radius in inches
L = coil length in inches
N = number of turns
Wire gauge and insulation do not change the inductance very much.
Insulation, in particular will change the self C and the self resonant
frequency.
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