R2 SAMPLE 3V LC2 10k i n 2.5V Y(B) 104 150 0.5A 2V U2 KO 220V GND 0.50.50.50.50.50.50.50.50.50.5 0.5w U1 X(H) RI 图3磁滞回线测试原理图 中國庆航大学 Civil Aviation University of China图3 磁滞回线测试原理图