K F e a b c 1 2 LX c Hỗnh III.1.1 : Nguyón lyù cỏỳu taỷo cuớa cọng từc tồ f lx f õt ÂC CD CC K 1 RN A B C K 2 K 3 OFF ON RN K 0 7 8 10 9 ÂC CD1 CC K 1 RN A B C K 8 K 7 NT MT RN K 01 K 4 K 2 K 5 K 3 K 6 CD2 NN MN K 02 OFF RN