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EC6202 / EE2203 Electronic Devices And Circuits Scanned Lecture Notes (All Units) - Srikala Edition
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Anna University , Chennai


Department of B.E-Electrical and Electronics Engg
Third Semester
EC6202 / EE2203 Electronic Devices And Circuits
Scanned Lecture Notes (All Units)


(Regulation 2013 / 2008) 

Electronic Devices And Circuits Handwritten Premium Lecture Notes, Prepared by Lecture Srikala. Specially for Electrical and Electronics Engineering Candidates. Syllabus Covered based on Anna University Sixth Semester R2008 Regulation.

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Syllabus :
  • UNIT-1 (pg.no 1-51) : PN JUNCTION DEVICES / PN DIODES AND ITS APPLICATION
  • UNIT-2 (pg.no 52-86) : BJT AND ITS APPLICATION
  • UNIT-3 (pg.no 87-114) : FET AND ITS APPLICATION
  • UNIT-4 (pg.no 115-154) : AMPLIFIER AND OSSILLATORS
  • UNIT-5 (pg.no 155-179) :FEEDBACK AMPLIFIERS AND OSCILLATORS / PULSE CIRCUITS
Content :
UNIT-1

PN DIODES AND ITS APPLICATION
Zener diode
FB of zener diode
RB of zener diode
VI characteristics
Breakdown mechanism in zener diode
Zener break down
Avalanche break down
Application of zener diode
Voltage regulator
Linear regulator
Series voltage regulators
Rectifier
Transformer
Transformer utilization factor
Full wave rectifier
Centre tapped forward
Bridge rectifier
Drift current
Light emmiting diode
LED biasing
Seven segment display
Liquid crystal display (LCD)
Types of liquid crystal
Types of LCD
1. Dynamic scattering display
2. Field effect display
Types of dynamic scattering display
1. Transmission type
2. Reflective type
Drift current
Diffusion current
Diode switching
Filters
Classification
1. Capacitors inputs filters
2. Choke input filters
3. LC filters
4. Pie type filter
5. RC filters

UNIT-2

BJT AND ITS APPLICATION
Current gain
Early effect or base width modulation
CC configuration
CB configuration
Power transistor
Thermal run away
Common mode rejection
Types
1. LED-photo diode optocoupler
2. LED-photo transistor optocoupler
Opto isolator circuits
Advantages
Disadvantages
Transistor construction
Grown type
Alloy type
Electro chemically etched type
Diffusion type
Epitaxial type

UNIT-3

FET AND ITS APPLICATION
MOSFET
1. Depletion type MOSFET
2. Enhancement type MOSFET
3. Power MOSFET
Construction of P channel JFET
N channel JFET
Drain characteristics
Cut off region
Saturation region
Ohmic region
Common sources amplifier
Application
Source follower
Features
JFET small signal models
FET as VVR
Application of VVR
Automatic gain control of amplifier
Expression for pinch voltages
Cascaded amplifier\multistage amplifier
Gain of casecaded configuration
Darlington pair

UNIT-4

AMPLIFIER AND OSSILLATORS
Differential amplifier
Common mode rejection ratio
Differential input resistance
Output resistance
Differential mode
DC analysis
Feedbacks
Classification of amplifier
1. Voltage amplifier
2. Current amplifier
3. Transconductance amplifier
4. Transresistance amplifier
Performance measure of negative feedback amplifier
Reduction in gain
Reduction in distortion
Reduction in noise
Voltage series feed back
Oscillators
Classification
1. Sinusoidal
2. Relaxation
Circuit operation
Selection of an oscillators
Stability of an oscillators
Colpits oscillators
Limitation of LC and RC oscillators
Crystal oscillators

UNIT-5

PULSE CIRCUITS
Multi vibrator
Types
1. Astable
2. Mono stable
3. Bi stable
Schmitt trigger
UJT
Clippers
1. Positive clippers
2. Negative clipper
3. Biased clippers
Clampers
Waveform shaping circuits
Integrating circuits
Hartley oscillators

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