ANALYSIS OF ITLI. AND MAGNKTI/ATIOX M KAST KKM KNTS 



85 



Fig. 4 — E([uival{Mit magnetic circuit. 



"PQ. 



4;7-NI VI/ 



(Re 



AAAr 



Jc = (Re y 



Fig. 5 — Magnetic circuit for core saturation. 



V"A 



fG 



5 = 



4;7-NI 



^t 



(Rr i^ 



C ft .i 



|..c t 



(Rlc 



(Rla 



(Ra 



?c = tRcV' 'Ja=(Ra>=a 



;a) 



yc 



Fig. 6 — Magnetic circuit for armature saturation. 



