Calculation Formula Of Partial Inductance

ntroduction

L and AL value of the size, can refer to the Micrometa table. For example: T50-52 material, winding 5 and a half circle, the L value was T50-52 (OD said 0.5 inches), checking the table and its AL value is about 33nH;

Zhongshan Adams inductance materials manufacturers analysis formula of partial inductance.

1, ring inductance

For ring CORE, the following formula can be used: (IRON)

L=N2*ALL= inductance (H) AL= induction coefficient;

H-DC=0.4 PI NI/lN== winding turns (circle);

H-DC= DC magnetization I= by current (A) l= magnetic circuit length (cm);

L and AL value of the size, can refer to the Micrometa table. For example: T50-52 material, winding 5 and a half circle, the L value was T50-52 (OD said 0.5 inches), checking the table and its AL value is about 33nH;

L=33* (5.5) 2=998.25nH = 1 H;

When the current is passed through the 10A, the L value can be changed by l=3.74 (look up table);

H-DC=0.4 PI NI/l=0.4 * 3.14 * 5.5 * 10/3.74=18.47 (look-up table);

Can understand the degree of decline in L value (i%).

Inductance calculation

Introduce an empirical formula:

L= (k* 0*) /l (s*N2*S);

Among them,

0 for the permeability of vacuum =4 PI *10 (-7). (10 minus seven parties);

S is the relative magnetic permeability of the inner core of the coil, and the hollow coil is s=1;

N2 is the square of the number of coils;

S coil cross-sectional area, the unit is square meters;

The length of the L coil, the unit is meter;

K coefficient, depending on the ratio of the coil radius (R) and length (L);

Calculation of the inductance of the unit for the amount of Henry;

All of the above are theoretical value and the actual quantity of electricity is measured as the standard.

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