Re: coil calculation formula

Camilo wrote:
> hi everybody!I need to know if exists any formula or software that
> lets you calculate the number of turns of an existent coil knowing the
> cross section and lenght of its core, wire diameter and its DC
> resistance? ( DC resistance is a result of wire lenght so I think with
> DC resistance value you'll finally get wire lenght and )
> PD: I don know coil's inductance just said data

Yes, such a formula and software exists. I wrote it. I don't
distribute it. If you have one case, give me the parameters: wire
gauge, insulation type (thickness), winding length, winding depth and
I'll post the results. If you have DC resistance I can use that to
find wire length and then number of turns etc. so you then wouldn't
need the winding depth. The software also estimates the inductance so
you could compare to the measured inductance of your coil if you get
around to measuring it. By the way, this calculator is ONLY for air
core coils!  I have nothing for iron or ferrite core coils.