变压器求负载上获最大功率问题
当内部电阻和载荷阻抗相等时,可以获得最大功率,并且阻抗比等于数字比的平方,n = 100。当内部电阻和负载阻抗相同时,负载将获得一半的电压,并在次级水平(100/2)/100 = 0.5V,p = V*V/V = 0.25瓦特(100/2)/100 = 0.5V(100/2)/100 = 0.25瓦
求负载最大功率
rl = rab,
this power = ua place = ua
rl = rab,
this power = ua place = ua