024
De primaire stroom I is:
a 20 A
b 500 mA
c 25 mA
d
50 mA
n = Up/Us
n = Is/Ip
n = Up/Us = 240/12 = 20
Is = Us / Rs = 12/12 = 1A
n = Is/Ip = Ip = Is/n = 1/20 = 0.05A = 50 mA
038
n = np/ns
n = Up/Us
n = Is/Ip
n
2
= Zp/Zs
n
2
= Cs/Cp
┘