Download Engineering Circuit Analysis Sixth Edition WH

Matakuliah
Tahun
Versi
: H0042/Teori Rangkaian Listrik
: 2005
: <<versi/01
Pertemuan 1
Circuit Analysis and
Electrical Engineering
1
Learning Outcomes
Pada akhir pertemuan ini, diharapkan mahasiswa
akan mampu :
• Memberikan definisi tegangan dan arus
• Mengidentifikasi hukum-hukum dasar
rangkaian listrik
2
Outline Materi
•
•
•
•
•
Materi 1 : Telusuran penyelesaian soal
Materi 2 : Pengertian arus dan tegangan
Materi 3 : Pengenalan simbol-simbol RL
Materi 4 : Hukum Ohm
Materi 5 : Aplikasi Hukum Ohm
3
Chapter 1 Circuit Analysis and
Electrical Engineering
A suggested problem-solving flow chart
Engineering Circuit Analysis Sixth Edition
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin
Copyright © 2002 McGraw-Hill, Inc. All Rights Reserved.
4
A suggested
problem-solving
flow chart
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
5
Basic Components
and Electric Circuits
Fig. 2.1
“Charge flowing through a wire…”
Figs. 2.5 and 2.6
Current labeling conventions
Figs. 2.9 and 2.10
Voltage labeling conventions
Fig. 2.12
“The power absorbed by the element is…”
Figs. 2.16 - 2.18
Circuit symbols for various sources
Fig. 2.19
Circuit for Example 2.2
Fig. 2.20
Circuit for Practice Problem 2.20
Fig. 2.23
Ohm’s Law
Engineering Circuit Analysis Sixth Edition
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin
Copyright © 2002 McGraw-Hill, Inc. All Rights Reserved.
6
Fig. 2.1 “Charge flowing through a wire…”
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
7
Current labeling conventions
Two different methods of labeling the same current.
(a,b) Incomplete, improper, and incorrect definitions of a current.
(c) the correct definition of i1(t).
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
8
Voltage labeling conventions
(a, b) These are inadequate definitions of a
voltage. (c) A correct definition includes
both a symbol for the variable and a plusminus symbol pair.
(a, b) Terminal B is 5 V positive with
respect to terminal A; (c,d)
terminal A is 5 V positive with
respect to terminal B.
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
9
Fig. 2.12
“The power absorbed by the element is…”
If the current arrow is directed into the “ +” marked terminal of
an element, then p = vi yields the absorbed power. A
negative value indicates that power is actually being
generated by the element.
If the current arrow is directed out of the “ +” terminal of an element,
then p = vi yields the supplied power. A negative value in this case
indicates that power is actually being absorbed instead of generated.
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
10
Circuit symbols for various
sources
Symbol for: (a) DC voltage source;
(b) battery; (c) ac voltage source.
Symbol for an
independent current
source.
The four different types
of dependent sources:
(a) current-controlled
current source;
(b) voltage-controlled
current source;
(c) voltage-controlled
voltage source;
(d) current-controlled
voltage source.
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
11
In the circuit below ,if v2 is known to be 3 V, find vL .
Fig. 2.19
Circuit for Example
2.2
If v2 = 3 V
Then it can be consider
that :
5v2 = (5 x 3) V = 15 V
vL = 5 v2
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
12
Find the power absorbed by each element in the circuit below.
Circuit for Practice Problem
W7A = 56 W ; W8V = 16 W ; W-12V = - 60W
W20V = 160 W ;
W20VDependent = 0.25 . –12 . 20 = -60 W
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
13
Ohm’s Law
v = i R
or
v
i =
R
Fig. 2.23
Ohm’s Law
W.H. Hayt, Jr., J.E. Kemmerly, S.M. Durbin, Engineering Circuit Analysis, Sixth Edition.
Copyright ©2002 McGraw-Hill. All rights reserved.
14
RESUME
• Arus ditentukan oleh arah dan variabel
arus.
• Tegangan ditentukan oleh polaritas dan
variabel tegangan.
• Karakteristik sumber tegangan dan arus
ditentukan oleh sifat indepedent dan
dependent terhadap beban.
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