Pooh said:
Terry Given wrote:
Pooh Bear wrote:
Further to my post about the IR2110 gate driver, does anyone have a
nice simple equation for calculating the inductance of a given loop on a
pcb ?
Yes I know..... we looked at it when I was about 17 / 18. Never needed
it since then until now.
Cheers, Graham
buy a copy of Terman's Radio Engineers Handbook, then use pp47-72 for to
solve for the geometry present. This was one of my first "old" books,
and I have used it for this purpose for a decade or so now. Grover is
pretty good too, but Terman suffices for most PCB-type problems.
Lol @ Radio Engineer's Handbook. That was one area I never planned to get
involved in !
Cheers, Graham
Laugh ye not:
rectangle of round wire, sides s1 & s2, diagonal g,
wire diameter d
L=0.02339[(s1+s2)*log(4*s1*s2/d)-s1*log(s1+g)-s2*log(s2+g)]
+ 0.01016*[u*delta*(s1+s2) + 2(g+d/2) - 2(s1+s2)]
rectangle of rectangular wire, thickness b, width c (into plane of loop)
L=0.02339[(s1+s2)*log(2*s1*s2/(b+c))-s1*log(s1+g)-s2*log(s2+g)]
+ 0.01016*[2*g - 0.5*(s1+s2) + 0.447*(b+c)]
all dimensions inches, L in uH. u is permeability (1.25e-6), delta is
skin depth