www.jntuworld.com
EDC-Unit1
UNIT-I
1.
Question&Answer
PN Junction Diode
What is an insulator, a semiconductor and a metal? Explain with the help of energy band
diagrams.
INSULATOR:
An insulator is a material that offers a very low level of conductivity un
1/2/2012
Response of a RC Circuit
Three steps to find out the response of an RC circuit:
Lecture 11
1. The initial capacitor voltage v(0).
2. The final capacitor voltage v() or Thevenin voltage (Voc).
3. The time constant (RtC).
Transient analysis
v (t )
11/25/2011
Recap
Lecture 6
Mesh Current Analysis
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
Mesh current analysis
1. Mesh analysis provides another general procedure
for analyzing circuits using mesh currents as the
circuit var
1/2/2012
Lecture 15
A transformer is an AC equipment which helps
to transfer power from one circuit to another,
without change in frequency.
Transformers
It is used to convert AC power at a certain
voltage to AC power at a different voltage, but
at the sa
Recap
Lecture 5
The equivalent resistance of N number of resistors connected in
series is the sum of the individual resistances.
N
Req R1 R2 Rn Rn
n 1
The voltage divider can be expressed as
vn
Node Voltage Analysis
Rn
v
R1 R2 Rn
The equivalent resistanc
12/1/2011
Superposition Theorem
Lecture 8
It states that the voltage across (or current through) an element
in a linear circuit is the algebraic sum of the voltage across (or
currents through) that element due to EACH independent
source acting alone.
Circ
12/1/2011
Capacitors
Lecture 9
Capacitors and Inductors
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
2
Capacitors store the potential energy
of accumulated electrons
Construction
A capacitor is a passive element designed to stor
1/21/2013
Lecture18
DigitalLogicCircuits
Dr.JayashriRavishankar
Room309@G17
jayashri.ravishankar@unsw.edu.au
AnalogVsDigital
Analog/Digitalsignalsintelecommunication
Original
Signal
Transmitted
Signal
(Modulated)
Attenuated
Signal
Noise
Received
Signal
Re
Basic Concepts
Lecture 1
Circuit Basics
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
Systems of Units.
Electric Charge.
Current.
Voltage.
Power and Energy.
Circuit Elements.
2
System of Units
Electric Charges
SI Units and multipl
1/2/2012
Lab exam
Lab exam will be conducted in Weeks 11 / 12 during normal lab time.
The schedule is given in BB under the link lab exam on the left pane.
The test duration is 90 minutes. There are 5 simple tasks (3 marks for
each task) that must be c
1/2/2012
Impedance Definition
Lecture 13
The impedance Z of a circuit is the ratio of the phasor voltage
V to the phasor current I, measured in ohms .
Z
AC Power and Power Factor
V RI
V
R jX | Z |
I
| Z | ( R 2 X 2 ) ; tan1(
V jLI jX L I
X
)
R
V
I
jXC
1/2/2012
Lecture 16
Operational Amplifiers
Dr. Jayashri Ravishankar
What is an Op Amp?
It is an electronic unit that behaves like a
voltage-controlled voltage source.
It is an active circuit element designed to
perform mathematical operations of additio
1/2/2012
DC Vs AC
Lecture 12
AC FUNDAMENTALS
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
A voltage supplied by a DC
source has a certain polarity
& remains constant.
Sinusoids
AC varies in polarity and
magnitude. The polarity
ch
1/12/2011
Motivation
Determine the voltage across the 2 resistor.
Lecture 7
V
Nodal analysis
20 v
v
8 v 30V
5
5
2
v0 x30 12V
5
Circuit Theorems
Dr. Jayashri Ravishankar
Are there any other alternative(s)?
Room 309@G17
jayashri.ravishankar@unsw.edu.au
Wha
Elements that
generate electrical
energy
Lecture 2
Circuit elements
&
Kirchhoff's Laws
Circuit Elements
Active Elements
Elements that
consume electrical
energy
Passive Elements
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
Indepen
www.jntuworld.com
EDC-UNITV
Question&answer
UNIT-V SMALL SIGNAL LOW FREQUENCY BJT MODEL
1. List out the advantages of h-parameters.
1. h-parameters are real numbers at audio frequencies.
2. These are easy to measure.
3. h-parameter can also be obtained fr
www.jntuworld.com
EDC UNIT-3
Question&answer
UNIT-III Bipolar Junction Transistor
1.Explain the construction and working of BJT.
A bipolar (junction) transistor (BJT) is a three-terminal electronic device constructed of
doped semiconductor material and ma
www.jntuworld.com
EDC UNIT-4
Question&answer
UNIT-IV TRANSISTOR BIASING AND STABILIZATION
1. What is the need for biasing?
In order to produce distortion free output in amplifier circuits, the supply voltages and
resistances establish a set of dc voltage
www.jntuworld.com
EDC-UNIT2
Question&answer
UNIT II
RECTIFIERS & FILTERS
1. Explain about Regulated DC power supply.
For the operation of most of the electronics devices and circuits, a d.c. source is required.
So it is advantageous to convert domestic a.
www.jntuworld.com
EDC-UNITVII
Question&answer
UNIT-VII FET AMPLIFIERS
1. With the help of a neat schematic, explain the functioning of a common source
amplifier.
Common Source JFET Amplifier
small signal amplifiers can also be made using Field Effect Tran
www.jntuworld.com
EDC-UNIT6
Question&answer
UNIT-VI FIELD EFFECT TRANSISTOR
1. Explain about the Field Effect Transistor and also mention types of FETs.
The Field Effect Transistor, or simply FET however, uses the voltage that is applied to
their input te
www.jntuworld.com
EDC-UNITVIII
Question&answer
UNIT VIII-SPECIAL PURPOSE ELECTRONIC DEVICES
1. Explain tunnel Diode operation with the help of energy band diagrams.
TUNNEL DIODE:
A tunnel diode or Esaki diode is a type of semiconductor diode which is capa
ELECTRONICDEVICESANDCIRCUITS
BRIEFNOTES
www.jntuworld.com
UNITI:ELECTRONDYNAMICS:CRO
e =1.602 10- 19 C , m =9.1 10 - 31 kg ,FforceonelectroninuniformelectricfieldE
eE
F=eE;acceleration a =
m
Ifelectronwithvelocity ' v ' movesinfield ' E ' makingan angle '
om
.c
Lecture Notes for Digital Electronics
rs
e
ne
i
g
n
E
a
F
D
a
O
o
1
Basic Digital Concepts
By converting continuous analog signals into a nite number of discrete states, a process
called digitization, then to the extent that the states are suciently
BUSS150
2016 1
Case study brief:
Your team works for a large consulting firm. You have been contracted as an external management
consultancy by the designated company. The company is reviewing how it does business. Your team
needs to research the companys
UNSW ELEC1111/ELEC1112 notes
Written by Matthew Davis
m.davis@student.unsw.edu.au
Published through ELSOC
www.elsoc.net/notes.php
Semester 2 2012
These notes are designed for revision, not brand new learning. They focus
on formulae, some of their derivati
1/2/2012
Actual circuit of Op-Amp
Lecture 17
Other Op Amp Applications
Dr. Jayashri Ravishankar
Room 309@G17
jayashri.ravishankar@unsw.edu.au
Ideal Op Amp characteristics
Inverting Op Amp
Inverting amplifier reverses the polarity of the input signal
whil
Lecture 3: Basic Circuit Laws
ELEC1112 Electrical Circuits
CONTENTS
1. Circuit Elements
2. Circuit Variables
3. Ohms Law
4. Series and Parallel Resistors
5. Voltage Division
6. Current Division
1. CIRCUIT ELEMENTS
Passive element absorbs energy, so that t