Arie "And now for something completely different". If your question is for determining the length of wire for a multiple turn coil , I would use the average diameter(to get the average circumference- not considering nesting condition ),length, and wire diameter. let see... looking at a cross section, if # of turns = (L/gage)* (b/gage) , where L=coil length and b = coil radial thickness and if total length of the wire= (# of turns)*(d+b)*pi , where d is the coil ID assuming (b+d)*pi is the average circumference of a turn then solve the first equation for b and substitute in second equation and punt- maybe there is a simpler way ----- I have a slightly different formula(s) for inductance (got it from that small information pocket book available at electronic store checkout counters). For single layer coil: I=(R^2 * N^2)/(9*R+10*L) For multiple layers: I=(0.8*(R^2*N^2)/(6*R+9*L+10*B)) where: I= inductance in microhenrys N=number of turns R=radius to center of windings(inches) B= radial thickness of windings(inches) L=length of coil(inches) Regards Barry Arie Verveer wrote: > Hi, A long time ago, far, far away, I used to remember a simple formula > that gave the length of wire for a coil, given the number of turns, internal > diameter, length of coil and gauge of the wire. But alas, I cant remember > it, so if anyone knows such a "winding" formula, I would be most > appreciative. Or anything like it. > > Arie __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>