Circuits 1
Methods of solution of DC
circuits (Cont.)
Network Theorems
Prof. Dr.
Mohamed Fathy
Copyright 2009
Prof. Dr. Mohamed Fathy Abu El-Yazeed
1
Network Theorems
These theorems are very useful in their
applications and can reduce much work in circui
NIT
Optical Networks
Part 2: WDM Network Technologies
Haitham S. Hamza, Ph.D.
Cairo University
Spring 2017
2012 Haitham S. Hamza
Typical DWDM Network
DWDM SYSTEM
DWDM SYSTEM
VOA
DCM
2
EDFA
EDFA
DCM
VOA
2012 Haitham S. Hamza
1
Active vs. Passive Optical
Cairo University
Faculty of Computers and Information
Department of Information Technology
Fourth Year 2016-2017
NIT: Optical Networks
Spring 2017
Course Staff
Course Instructor: Haitham Hamza
Email:
Haitham Hamza: [email protected]
Lecture Time: Mon
C AIRO U NIVERSITY
Faculty of Computers and Information
Optical Networks
Spring 2017
Sheet 2
Optical Couplers
Objective: Practice basic concepts of optical couplers and PSCs.
Question 1 Suppose a 1 mW, 1550 nm signal is transmitted across a 5 km fiber, th
CAIRO UNIVERSITY
Faculty of Computers and Information
Optical Networks
Spring 2017
Extra Questions
Question 1
An optical transmitter wants to broadcast a signal to four destinations using PSC.
Suppose that the source is directly connected to the PSC, wher
C AIRO U NIVERSITY
Faculty of Computers and Information
Optical Networks
Spring 2017
Sheet 3
Optical Devices
Objective: Practice some basic concepts of optical device technologies.
Question 1 Explain the difference between active and passive optical devic
C AIRO U NIVERSITY
Faculty of Computers and Information
Optical Networks
Spring 2017
Sheet 4
WDM Networks
Objective: Practice and review some of the key concepts of WDM networks.
Question 1 Explain the key difference between the third and fourth generatio
Cairo University
Faculty of Engineering
Electronics & Comm. Eng. Dept.
Circuits 1
1st year
Prof. Dr. Mohamed Fathy
Sheet 1
10K
5K
10K
1- Find the currents in all branches
of the shown circuit. Check the
power balance.
10K
20V
5K
Answer: ( Power dissipated
Cairo University
Faculty of Engineering
Electronics & Comm. Eng. Dept.
Circuits 1
1st year
Prof. Dr. Mohamed Fathy
SHEET 2
SOLUTION METHODS OF DC CIRCUITS
Note: Unless otherwise stated, all resistors are in k , all batteries voltages
are in volts and all
Circuits 1
Methods of solution of DC circuits
Prof. Dr.
Mohamed Fathy
1
Copyright 2009
Prof. Dr. Mohamed Fathy Abu El-Yazeed
Methods of solution of DC
circuits
Definition :
The problem of solution of DC circuits is
finding the response (voltage or curren
Cairo University
Faculty of Engineering
Electronics & Comm. Eng. Dept.
Circuits 1
1st year
Prof. Dr. Mohamed Fathy
SHEET 3
CIRCUIT THEOREMS
Note: Unless otherwise stated, all resistors are in k , all batteries
voltages are in volts and all current sources
Cairo University
Faculty of Engineering
Comm. & Computer Eng. Dept.
Circuits 1
Lecture #1
Prof. Dr.
Mohamed Fathy
Copyright 2009
Prof. Dr. Mohamed Fathy Abu El-Yazeed
1
Course Importance
1- The most important course for an electrical
engineering student
2
Circuits 1
Methods of solution of DC circuits
(Cont.)
Method 3: Loop Analysis
Prof. Dr.
Mohamed Fathy
1
Copyright 2009
Prof. Dr. Mohamed Fathy Abu El-Yazeed
Methods of solution of DC circuits
Method 3 Loop Current Method (Mesh Analysis)
1- Convert indepe
Circuits 1
Methods of solution of DC circuits (Cont.)
Method 4: Nodal Analysis
Prof. Dr.
Mohamed Fathy
1
Copyright 2009
Prof. Dr. Mohamed Fathy Abu El-Yazeed
Method 4 Nodal Analysis
Steps of solution:
1- Convert independent voltage sources into
equivalen