**Nagpur University EC Digital Circuits Syllabus**

**B.E. IV Semester Electronics & Telecommunication Engineering Digital Circuits**

4-ET-2

UNIT-I:

Analog V/s. Digital Systems, Transistor as a switch, Boolean Algebra, Boolean identities, Logical Problems, Binary, Gray, Octal, Hex & ASCII codes, Gates and their truth tables, D Morgan’s Laws, Sum of products & Product of Sums.

Logical families: TTL, ECL, CMOS etc., Fan-in, Fan-out, propagation delay properties.

UNIT-II:

Combinational logic – concepts, SSI, MSI & VLSI Circuits. Classifications Standard TTL, CMOS characteristics, Decoders, Encoders. Multiplexers, Demultiplexers, code converters, characteristics of display devices, standard configuration of gates as SSI/MSI/LSI circuits.

UNIT-III:

Karnaugh map, simplification of sum of products and products of sum, solution to problems using K-maps; conversion of Decoders/ MUX to one another use of MUX as function generator.

UNIT-IV:

Introduction to Flip Flop, Latches, Concept of clock, Memories conversation with Flip Flop as basic cell, RAM, ROM, EPROM & EEPROM-an overview, Master slave combination and conversion of one type to another type Flip Flops.

UNIT-V:

Excitation tables & introduction to sequential circuits counters synchronous / asynchronous. Different modulo counters with reset / clear facility. Design of counters of arbitrary modulo with K-maps, Lock free counters.

UNIT-VI:

Arithmetic Circuits- Adders, Subtractor (Half & Full). BCD adder / subtractor concept of ALU and its design. Integrated circuits version of multivibrators and their design parameters.

Text Books:

- Digital Logic and Computer Design- Mano (PHI).
- Digital Integrated Electronics- Herbert Taub, McGraw Hill.
- Digital Electronics Principles- Malvino and Leeach, PHT.
- Modern digital Electronics- R. P. Jain.
- Introduction to Digital System- Palmer, Tata McGraw Hill.
- Digital Electronics- Ryan, McGraw Hill.
- Digital Circuits and Microprocessor- Herbert Taub, McGraw Hill.

B.E. IV Semester Electronics & Telecommunication Engineering Electronics Engineering Materials & Components

4-ET-3

UNIT-I:

Dielectric, Properties of insulators in static fields, Polarization, dielectric constant dielectric behavior of monatomic & polyatomic gases, Liquids & solids, polar & non-polar dielectrics, Clasius-Mosotti equation, ferroelectric, piezo electric & pyroelectric materials. UNIT-II:

Dielectric properties of insulators in alternating fields, complex dielectric constant, dipolar relaxation, dielectric loss, loss tangent, dielectric breakdown, fixed and variable capacitors, electrolytic, paper, plastic, ceramic & mica capacitors used in electronics circuits, dielectrics used in cables & transformers.

UNIT-III:

Conductivity of pure meters & alloys temperature coefficient of resistivity, high conductivity materials, high resistivity materials, heating elements, fuses, contact materials, connectors, switches, heat sinks, solders, fixed variable resistors, nonlinear resistors, resistors used in electronics circuits, super conductivity, type I & II materials, high temperature superconductivity, applications of superconductivity.

UNIT-IV:

Spin & orbital magnetic dipole moment of electron, dia, para, ferro, ferry & anti ferromagnetism, soft and hard magnetic materials, ferrites, magnetic cores of conductors, transformers, relays, electric machines & memory elements, magnetic resistors, magnetic tapes. UNIT-V:

Semiconductors, band gap, electron & hole mobilities purification & doping of semiconductor materials, characteristics of semiconductor devices, diodes, zener & breakdown diodes, tunnel diodes, varactors, transistors (BJT, FET, MOSFET, UJT), Diac, SCR & Triac, Hall effect devices.

UNIT-VI:

Fabrication of linear & digital ICs, LSI, VLSI, CMOS devices, optoelectronics devices, LCD, LED, phototransistors, Optical couplers, detectors, optical fibers, lasers.

Text Books:

- A course in Electrical Engineering Materials. S.P. Seth & A.V. Gupta :

Dhanpatrai & Sons, New Delhi

- Electronics Components & Materials M.A. Joshi, A.H. Wheeler ECO,

Allahabad 211001.

Reference Books:

- Discrete Electronics Components. F.F. MAZDA, Cambridge Univ, Press, New York.
- Electronics Engineering Material A.J. Dekker.

B.E. IV Semester Electronics & Telecommunication Engineering Electromagnetic Fields

4-ET-4

UNIT-I:

Gradient, Divergence & curl of a vector & their physical interpretation, Divergence & Stoke’s theorem, their proof & validity for vector fields. Irrotational & solenoidal fields. The uniqueness & Helmholtz theorems.

UNIT-II:

Electrostatic fields, Coulomb’s law, Electric field for different charge distributions. Gauss’s law & its applications. Electric potential for different charge distributions. Poisson’s & Laplace equations.

UNIT-III:

Magnetic fields, Lorentz law, Biot-Savart law, Magnetic field due to different current distributions. Gauss’s law & Ampere’s law. Magnetic vector potential & magnetic flux. Magnetic vector potential for different current distributions. Lenz’s & Faraday’s laws, Energy stored in magnetic fields.

UNIT-IV:

Electric scalar potential, solution of Laplace equation in two dimensions using method of separation of variables, displacement current. Maxwell’s equations for time varying fields & their physical significance. Boundary conditions of the vector fields.

UNIT-V:

Poynting Vector theorem & its proof, Uniform plane wave, wave equation & its solution in free space, relation between E. & H. vectors, intrinsic impedance, wave equations & their solutions & conducting & dielectric media.

UNIT-VI:

Plane waves, normal & oblique incidence on a perfect conductor & dielectric, reflection & refraction, Snell’s law, Brewster angle, polarization, linear, circular & elliptical.

Text Books:

- Electromagnetic waves & radiating systems: E.C. Jordan & K.G. Balmain.
- Principals & applications of Electromagnetic fields: Pionsey & Collins.
- Electromagnetic Fields: Hayt.
- Massar: 2000 solved Problem in Electromagnetic.

4-ET-5

UNIT-I:

Transformer: Single Phase and three phase-effect of loading, regulation, open circuit and short-circuit tests, efficiency, all day efficiency, parallel operation. Autotransformers.

UNIT-II:

D.C. Generators, series shunt and compound, Commutator, armature EMF, armature reaction and commutation, equivalent circuit, characteristics, parallel operation, Applications.

UNIT-III:

D.C. Motor: Series shunt and compound, Back emf, characteristics, starting, speed control, applications.

UNIT-IV:

Three Phase, Induction Motor: Principal of operation, type torque and slip equivalent circuit. No. Load and blocked rotor test starting speed control and applications.

UNIT-V:

Single Phase Motors: Principle of operation of single-phase induction motor, starting methods, principle of a.c. series motor, Universal motor.

UNIT-VI:

Three phase synchronous Machines: Motor and Generator action synchronous impedance and excitation. Equivalent circuit, voltage regulation, starting of motor, effect of excitation variation in case of motor.

Text Books:

- Electrical Machinery : Nagarath Kothari (TATA – McGraw Hill)
- Electric Machinery : Fitzerald, Kingsley.
- EMEC Devices : Deltord (McGraw Hill).
- Electrical Machines by Dr. P.K. Mukherjee and S. Chakravarti (Dhanpatrai).

Nagpur University Electronics and Telecommunication Engineering Syllabus