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Arus Bolak Balik - e-Learning Sekolah Menengah Kejuruan

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Pada gambar di atas Z 1 , Z 2 , dan Z 3 yang terbentuk ? , ditransformasikan<br />

menjadi Z a , Z b , dan Z c bentuk Y, Jika<br />

Z 1 = (3 – J4) ohm<br />

Z 2 = (8 + J6) ohm<br />

Z 3 = (4 + J3) ohm<br />

Tentukan: Z a , Z b dan Z c<br />

Penyelesaian<br />

Z a =<br />

Z<br />

1<br />

Z1Z<br />

3<br />

? Z ?<br />

2<br />

Z<br />

3<br />

?<br />

(3 ?<br />

(3 ? J4)(4 ? J3)<br />

J4) ? (8 ? J6) ? (4 ?<br />

J3)<br />

24 ? J7 (24 ? J7) (15 ? J5)<br />

= ?<br />

15 ? J5 250<br />

325 ? J225<br />

= ? 1,3 ? j0,<br />

9<br />

250<br />

Z a = 1,3 – j 0,9 = 1,58 ? -34,7 o ohm.<br />

Z b =<br />

=<br />

Z<br />

1<br />

Z<br />

2Z3<br />

? Z ? Z<br />

2<br />

3<br />

(8 ? j6)(4 ? j3)<br />

?<br />

?<br />

(15 ? J5)<br />

( 14 ? J 48) (15 ? J5) 450 ? J650<br />

?<br />

250<br />

250<br />

Z b = 1,8 + J 2,6 = 3,16 ? 55,3 o ohm<br />

Z c =<br />

Z<br />

1<br />

Z1Z<br />

2<br />

? Z ? Z<br />

2<br />

3<br />

(3 ? J4)(8 ? J6)<br />

?<br />

?<br />

(15 ? J5)<br />

(14 ? J48)<br />

(15 ? J5)<br />

(48 ? J14)<br />

(15 ? J5)<br />

( 48 ? J14) (15 ? J5) 650 ? J 450<br />

=<br />

?<br />

250<br />

250<br />

Z c = (2,6 – J 1,8) = 3,16 ? -34,7 o ohm<br />

Contoh soal<br />

Modul.FIS.22 Arus Bolak-Balik C<br />

C<br />

35<br />

Z 1<br />

Z<br />

Z

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