Maximum
Flux Density Calculator
See our other Electronics
Calculators.
The maximum flux density for a core/coil
geometry should be calculated to verify that it is below the specified
value for a given core, so that the core doesn't saturate. This
calculator is useful in matching a core size to the required
power.
Note that if there is no DC term, then the
calculation is completely independent of the core material.
Equations
B_{max}=B_{max(AC)}+B_{max(DC)}
B_{max(DC)}_{}=
(L*I_{dc}*10^{8})/(NA_{c})
B_{max}=
(V_{rms}*10^{8})/(4.44*F*N*A_{c})
+ (L*I_{dc}*10^{8})/(N*A_{c})
gauss
Note if no DC current flows,
then the second term of the equation is dropped.
In terms of A_{L(uH/100T}^{2}_{)}:
L= N^{2}A_{L(uH/100T}^{2}_{)}10^{4}
B_{max(DC)}=
(N*A_{L}_{(uH/100T}^{2}_{)}10^{4}*I_{dc})/(A_{c})
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