开关电源磁元件设计.pdf

5.1 1 A 5-1,N l,I I l IN Hl 5-1 N MKS r IN H A/m 5-2a 5-1 l CGS r 0.4πIN H (Oe) 5-2b l (CGS )Oe ,MKS 2 10 1(Oe)= A/m 0.4π 5-1 2. A 5-2 N A A U N A B d d BAN ψ ( ) −e 5-2 dt dt 1 dB U NA (5-3) dt Udψ / dt 3. 5-1 H B B µH dH U NAµ dt iN H l 2 N Aµ di U l dt 2 N Aµ L 5-4 l di U L 5-5 dt 5.2 5-1 CGS MKS MKS CGS CGSMKS MKS CGS A/m Oe 2 H