电压不够电动机不转,也叫做堵转,这时电机线圈可看做纯电阻,设电阻为R
则R = 0.3/0.3 = 1欧姆
正常工作时,电源功率就是输入功率 ,P = 1.2*0.5 = 0.6W
电流 I =0.5 ,根据焦耳定律 损耗功率 P' = I^2*R =.0.5^2 = 0.25
电压不够电动机不转,也叫做堵转,这时电机线圈可看做纯电阻,设电阻为R
则R = 0.3/0.3 = 1欧姆
正常工作时,电源功率就是输入功率 ,P = 1.2*0.5 = 0.6W
电流 I =0.5 ,根据焦耳定律 损耗功率 P' = I^2*R =.0.5^2 = 0.25