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TEOREM THEVENIN & TEOREM NORTON EN. CHIN SENG FATT ADTEC TAIPING LITAR ELEKTRIK

TEOREM THEVENIN & TEOREM NORTON

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INTRODUCTION TO THEVENIN THEOREM AND NORTON THEOREM AND ITS METHOD OF APPLICATIONS IN CIRCUIT ANALYSIS AND SIMPLIFICATION

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Page 1: TEOREM THEVENIN & TEOREM NORTON

TEOREM THEVENIN &

TEOREM NORTON

EN. CHIN SENG FATT

ADTEC TAIPING

LITAR ELEKTRIK

Page 2: TEOREM THEVENIN & TEOREM NORTON

TUJUAN PEMBELAJARAN

Selepas mengikuti topik ini, pelajar-pelajar mesti boleh:

Terangkan Kaedah Teorem Thevenin dan Norton

Terangkan Kaedah Teorem Thevenin ke Norton dan sebaliknya

24/09/2014 2 THEVENIN_NORTON

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KANDUNGAN

Thevenin Theorem

Norton Theorem

Thevenin ke Norton

Norton ke Thevenin

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ANALISIS-ANALISIS LITAR

HUKUM OHM

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HKV HKA

MESH NODE THEVENIN / NORTON

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TEOREM THEVENIN

MENYATAKAN BAHAWA

Satu litar linear yang kompleks boleh diwakilkan dengan litar setara yang mengandungi satu sumber voltan sesiri dengan satu rintangan setara dan beban

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KAEDAH TEOREM THEVENIN

1. MENCARI VOLTAN THEVENIN

a. KELUAR BEBAN

b. KIRA VOLTAN

2. MENCARI RINTANGAN THEVENIN

a. PINTAS SUMBER BEKALAN

b. KIRA JUMLAH RINTANGAN

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CONTOH 1 TEOREM THEVENIN

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KENALPASTI BEBAN

RINTANGAN BEBAN 4Ω

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CARI VOLTAN THEVENIN

1. KELUAR BEBAN DARI LLITAR

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CARI VOLTAN THEVENIN

2. KIRA VOLTAN

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[10Ω/(5Ω +10Ω)]

x (15-10V)

=3.33V 10V + 3.33V

= 13.33V

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CARI RINTANGAN THEVENIN

3. PINTAS SUMBER

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CARI RINTANGAN THEVENIN

4. KIRA JUMLAH RINTANGAN

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5||10+6 =9.33Ω

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LITAR SETARA THEVENIN

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9.33Ω

13.33V

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SOALAN: CARI ARUS & VOLTAN PADA 4Ω

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9.33Ω

13.33V

I = V / R = 13.33

(9.33+4) = 1A

V = [4/(9.33+4)] x 13.33 = 4V ATAU V = 1A x 4Ω = 4V

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KESIMPULAN TEOREM THEVENIN

BIL. LANGKAH TUJUAN

1 KELUARKAN BEBAN MENCARI VOLTAN THV

2 KIRA VOLTAN

3 PINTAS SUMBER MENCARI RINTANGAN

THV 4 KIRA JUMLAH

RINTANGAN

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UJI KENDIRI

LUKIS LITAR THEVENIN. CARI ARUS & VOLTAN 4Ω

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TEOREM NORTON

MENYATAKAN BAHAWA:

Satu litar linear yang kompleks boleh diwakilkan dengan litar setara (satu sumber arus selari dengan satu rintangan setara)

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KAEDAH TEOREM NORTON

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1. MENCARI ARUS NORTON

a. PINTAS BEBAN

b. TUKAR SUMBER VOLTAN KE SUMBER ARUS

c. KIRA JUMLAH SUMBER ARUS

d. KIRA ARUS PINTAS

2. MENCARI RINTANGAN NORTON

a. KELUAR SUMBER BEKALAN

b. KIRA JUMLAH RINTANGAN

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CONTOH 2 TEOREM NORTON

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KENALPASTI BEBAN

RINTANGAN BEBAN 4Ω

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CARI ARUS NORTON

1. PINTAS RINTANGAN BEBAN 4Ω

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CARI ARUS NORTON

2. TUKAR SUMBER VOLTAN KE SUMBER ARUS

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10V/10Ω =1A

15V/5Ω =3A

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CARI ARUS NORTON

2. TUKAR SUMBER VOLTAN KE SUMBER ARUS

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CARI ARUS NORTON

3. JUMLAHKAN SUMBER ARUS

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1A + 3A =4A

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CARI ARUS NORTON

4. KIRA ARUS PINTAS.

(HUKUM PEMBAHAGI ARUS) 24/09/2014 THEVENIN_NORTON 25

𝐼 = 3.33

6 + 3.33𝑥 4 = 𝟏. 𝟒𝟑𝑨

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CARI RINTANGAN NORTON

5. KELUARKAN SUMBER ARUS

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CARI RINTANGAN NORTON

6. KIRA JUMLAH RINTANGAN

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𝑅 = 6 +5 𝑥 10

5 + 10= 𝟗. 𝟑𝟑 𝑶𝒉𝒎

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LITAR SETARA NORTON

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SOALAN: CARI ARUS PADA 4 OHM

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I = [9.33/(9.33+4)] x 1.43 = 1A

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KESIMPULAN TEOREM NORTON

LANGKAH PENERANGAN TUJUAN

1 PINTASKAN BEBAN MENCARI ARUS NORTON 2 TUKAR SUMBER VOLTAN KE

SUMBER ARUS.

3 JUMLAHKAN SUMBER ARUS

4 KIRA ARUS PINTAS GUNA HUKUM PEMBAHAGI ARUS

5 BUKA LITAR SUMBER ARUS MENCARI RINTANGAN

NORTON 6 KIRA JUMLAH RINTANGAN

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UJI KENDIRI

LUKIS LITAR NORTON. CARI ARUS 4Ω

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LITAR THEVENIN-NORTON

SOURCE TRANSFORMATION

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1. TRANSFORM SUMBER VOLTAN KE SUMBER ARUS

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15V/5 Ohm=3A 10V/10 Ohm=1A

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2. JUMLAHKAN SUMBER ARUS

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3A+1A=4A

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3. JUMLAH RINTANGAN SELARI

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5x10 = 3.33 Ohm 5+10

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4. TRANSFORM SUMBER ARUS KE VOLTAN

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4A x 3.33 Ohm = 13.33V

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5. JUMLAH RINTANGAN SIRI

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LITAR THEVENIN

6 Ohm + 3.33 Ohm = 9.33 Ohm

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6. THEVENIN ke NORTON

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LITAR NORTON

13.33V / 9.33Ohm = 1.43A

LITAR THEVENIN

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CONTOH LAGI…

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CONTOH LITAR 3

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R2 = RINTANGAN BEBAN @ LOAD

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1. TRANSFORM SUMBER VOLTAN KE

SUMBER ARUS

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I2 = V1 / R1

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2. JUMLAHKAN SUMBER ARUS

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I3 = I1 + 12

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3. TRANSFORM SUMBER ARUS KE SUMBER VOLTAN

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V2 = I3 x R4

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4. JUMLAHKAN RINTANGAN SIRI

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R6 = R1 + R3 + R4

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SELESAI!

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LITAR SETARA THEVENIN

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LITAR NORTON

SOURCE TRANSFORMATION

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CONTOH LITAR 4

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R2 = RINTANGAN BEBAN @ LOAD

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CONTOH LITAR 3 THEVENIN

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LITAR SETARA THEVENIN

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THEVENIN NORTON

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LITAR SETARA NORTON

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RUMUSAN – SOURCE TRANSFORMATION

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Norton Thevenin VTH = IN x RN RTH = RN

Thevenin Norton IN = VTH / RTH RN = RTH

Thevenin Norton

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THEVENIN NORTON

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THEVENIN DAN NORTON

• JUMLAH RINTANGAN SETARA ADALAH SAMA

– RN = RTH

• ARUS PADA BEBAN ADALAH SAMA

– I LOAD NORTON = I LOAD THEVENIN

• HUKUM OHM

– VTH = I N x RN

– I N = VTH / RTH

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THEVENIN vs NORTON

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NO. NORTON THEVENIN

1 PINTASKAN BEBAN KELUARKAN BEBAN

2 TUKAR SUMBER VOLTAN KE SUMBER ARUS

KIRA VOLTAN

3 JUMLAHKAN SUMBER ARUS -

4 KIRA ARUS PINTAS GUNA HUKUM PEMBAHAGI ARUS

-

5 BUKA LITAR SUMBER ARUS PINTAS SUMBER

6 KIRA JUMLAH RINTANGAN KIRA JUMLAH RINTANGAN

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MEMILIH ANALISIS YANG SESUAI

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• TEOREM SUPERPOSISI – HUKUM OHM, HUKUM LITAR SIRI/SELARI – KEMAHIRAN MATEMATIK RENDAH – SATU ANALISIS UNTUK SATU SUMBER – SUKAR, MASA LAMA ANALISIS

• ANALISIS NOD – HUKUM KIRCHOFF ARUS – JANA PERSAMAAN DENGAN MUDAH – PENYELESAIAN NILAI SATU VOLTAN & PECAHAN – KEMAHIRAN MATEMATIK RENDAH – PERSAMAAN SERENTAK JIKA LEBIH 2 NOD

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MEMILIH TEOREM YANG SESUAI

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• ANALISIS MESH

– HUKUM KIRCHOFF VOLTAN

– PERSAMAAN DIJANA MUDAH

– SELESAIKAN NILAI SEMUA ARUS

– KEMAHIRAN MATEMATIK TINGGI

– PENYELESAIAN PERSAMAAN SERENTAK

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MEMILIH TEOREM YANG SESUAI

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• TEOREM THEVENIN

– PENGGUNAAN 1 SUMBER VOLTAN SETARA DAN 1 RINTANGAN LITAR SIRI

– KEMAHIRAN MATEMATIK RENDAH

– BERGUNA DALAM REKABINA LITAR DENGAN NILAI BEBAN BERBILANG

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MEMILIH TEOREM YANG SESUAI

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• TEOREM NORTON

– PENGGUNAAN 1 SUMBER ARUS SETARA DAN 1 RINTANGAN LITAR SELARI

– PELENGKAP KEPADA TEOREM THEVENIN

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TUGASAN

LUKIS LITAR NORTON DENGAN CARA SOURCE TRANSFORMATION.

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TAMAT

SEKIAN TERIMA KASIH

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KAPASITOR & INDUKTOR

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