| FORMULA | |
| VRMS x 108   
          B =    
           4,44 x f x N x Ae .Sine Wave | 1 Lim D B  mi 
          =      
           mo D H | 
| VRMS x 108   
          B =   
		 4 x f x N x Ae Obs.: Onda Quadrada | AL x S I / A   me 
           @   ......... .mo | 
| ....0,4 x p x N x I DC   
          HDC=    
           ...... Le | ..... L   AL 
          =    
		 .... N2 
 B £ 0,25 mT or 2,5 Gauss | 
| 1,41 x 0.4 x p x N x I RMS   
          H    
		 . Le | |
| Where: | |
| H = Field strength [Oe] | |
| B = Flux Density [Gauss] | |
| L = Indutance [nH] | |
| AL = Indutance Factor [nH] | |
| S I/A = Core Factor [cm-1] | |
| Le = Effective Length [cm] | |
| Ae = Effective Area [cm2] | |
| mi = Initial permeability | |
| me = Effective Permeability | |
| VRMS = Volts RMS [V] | |
| IDC = DC current [A] | |
| IRMS = RMS current [A] | |
| f = Frequency [HZ] | |
| N = Nbr. of turns | |
| mo = 12.57 [nH/cm] | |
| Measurement conditions of AL : B £ 0,25 mT or 2,5 Gauss | |
| f = 4 to10 Khz | |





 [Gauss]
     
          [Gauss] DH® 
          0
    
          DH® 
          0    [Oe]
    [Oe]