Friday, July 31, 2009

UNTI STEP FUNCTION


The Heaviside Unit Step Function defines functions encountering ideal On/Off

The Heaviside unit step function turns on a function at t0

The switch (change) at t0 is in fact an impulse, i.e., the Dirac delta function.


DIRAC DELTA OR UNIT IMPULSE FUNCTION

The Heaviside Unit Step Function defines functions encountering ideal On/Off

The Dirac delta function works like a sampling gate at t0,

The effect of the sampling gate accumulated through the domain t is the unit step function.

Wednesday, July 29, 2009

COUPLING CE AMPLIFIER



DC MOTOR





ELECTRONICS AND CIRCUITS

PRINCIPLES OF SEMICONDUCTOR DEVICES

ELECTRONIC CIRCUIT ANALYSIS 2
ELECTRONIC CIRCUIT ANALYSIS 1

JNTU ECE AND GATE SYALLABUS

ECE SYLLABUS
Hello! we are the students of a college,under JNTU ECE.Currently the topics covered in 7 semesters of ECE course are:

First year:

1)C&data structures
2)Electronics devices and circuits
3)Mathematics-1
4)Mathematics-2
5)English
6)Engineering drawing
7)Network analysis
8)Applied Physics

Second Year:

1)Electrical Technology
2)Pulse and Digital circuits
3)Electronic Circuit Analysis
4)Signals and Systems
5)Environmental Sciences
6)Analog Communications
7)Control Systems
8)Mathematics-3
9)Probability Theory and Stochastic Processs
10) Switching Theory and Logic design
11)OOPS throygh JAVA
12)Electromagnetic waves and transmission lines

Third Year:

1)Managerial Economics and financial Analysis
2)Antennas and Wave Propagation
3)Linear Integrated Circuits
4)Digital Integrated Circuits
5)Digital Communications
6)Management Science
7)Digital Signal Processing
8)Very Large Scale Integration(VLSI)
9)Telecommunication and Switching Systems
10)Microwave Engineering
11)Computer Organization

Fourth Year:
Computer networks
electronics measurement and instrumentation
Cellular and mobile communications
radar systems
satellite communications
digiatl image processing
wireless communciations and networks

GATE SYLLABUS ACCORDING TO GATE 2009

ENGINEERING MATHEMATICS
Linear Algebra: Matrix Algebra, Systems of linear equations, Eigen values and eigen vectors.

Calculus: Mean value theorems, Theorems of integral calculus, Evaluation of definite and improper integrals, Partial Derivatives, Maxima and minima, Multiple integrals, Fourier series. Vector identities, Directional derivatives, Line, Surface and Volume integrals, Stokes, Gauss and Green�s theorems.

Differential equations: First order equation (linear and nonlinear), Higher order linear differential equations with constant coefficients, Method of variation of parameters, Cauchy�s and Euler�s equations, Initial and boundary value problems, Partial Differential Equations and variable separable method.

Complex variables: Analytic functions, Cauchy�s integral theorem and integral formula, Taylor�s and Laurent� series, Residue theorem, solution integrals.

Probability and Statistics: Sampling theorems, Conditional probability, Mean, median, mode and standard deviation, Random variables, Discrete and continuous distributions, Poisson, Normal and Binomial distribution, Correlation and regression analysis.
Numerical Methods: Solutions of non-linear algebraic equations, single and multi-step methods for differential equations.

Transform Theory: Fourier transform, Laplace transform, Z-transform.

ELECTRONICS AND COMMUNICATION ENGINEERING


Networks:
Network graphs: matrices associated with graphs; incidence, fundamental cut set and fundamental circuit matrices. Solution methods: nodal and mesh analysis. Network theorems: superposition, Thevenin and Norton�s maximum power transfer, Wye-Delta transformation. Steady state sinusoidal analysis using phasors. Linear constant coefficient differential equations; time domain analysis of simple RLC circuits, Solution of network equations using Laplace transform: frequency domain analysis of RLC circuits. 2-port network parameters: driving point and transfer functions. State equations for networks.

Electronic Devices:
Energy bands in silicon, intrinsic and extrinsic silicon. Carrier transport in silicon: diffusion current, drift current, mobility, and resistivity. Generation and recombination of carriers. p-n junction diode, Zener diode, tunnel diode, BJT, JFET, MOS capacitor, MOSFET, LED, p-I-n and avalanche photo diode, Basics of LASERs. Device technology: integrated circuits fabrication process, oxidation, diffusion, ion implantation, photolithography, n-tub, p-tub and twin-tub CMOS process.

Analog Circuits:
Small Signal Equivalent circuits of diodes, BJTs, MOSFETs and analog CMOS. Simple diode circuits, clipping, clamping, rectifier. Biasing and bias stability of transistor and FET amplifiers. Amplifiers: single-and multi-stage, differential and operational, feedback, and power. Frequency response of amplifiers. Simple op-amp circuits. Filters. Sinusoidal oscillators; criterion for oscillation; single-transistor and op-amp configurations. Function generators and wave-shaping circuits, 555 Timers. Power supplies.

Digital circuits:
Boolean algebra, minimization of Boolean functions; logic gates; digital IC families (DTL, TTL, ECL, MOS, CMOS). Combinatorial circuits: arithmetic circuits, code converters, multiplexers, decoders, PROMs and PLAs. Sequential circuits: latches and flip-flops, counters and shift-registers. Sample and hold circuits, ADCs, DACs. Semiconductor memories. Microprocessor(8085): architecture, programming, memory and I/O interfacing.

Signals and Systems:
Definitions and properties of Laplace transform, continuous-time and discrete-time Fourier series, continuous-time and discrete-time Fourier Transform, DFT and FFT, z-transform. Sampling theorem. Linear Time-Invariant (LTI) Systems: definitions and properties; causality, stability, impulse response, convolution, poles and zeros, parallel and cascade structure, frequency response, group delay, phase delay. Signal transmission through LTI systems.

Control Systems:
Basic control system components; block diagrammatic description, reduction of block diagrams. Open loop and closed loop (feedback) systems and stability analysis of these systems. Signal flow graphs and their use in determining transfer functions of systems; transient and steady state analysis of LTI control systems and frequency response. Tools and techniques for LTI control system analysis: root loci, Routh-Hurwitz criterion, Bode and Nyquist plots. Control system compensators: elements of lead and lag compensation, elements of Proportional-Integral-Derivative (PID) control. State variable representation and solution of state equation of LTI control systems.

Communications:
Random signals and noise:
probability, random variables, probability density function, autocorrelation, power spectral density.
Analog communication systems:
amplitude and angle modulation and demodulation systems, spectral analysis of these operations, superheterodyne receivers; elements of hardware, realizations of analog communication systems; signal-to-noise ratio (SNR) calculations for amplitude modulation (AM) and frequency modulation (FM) for low noise conditions. Fundamentals of information theory and channel capacity theorem. Digital communication systems:
pulse code modulation (PCM), differential pulse code modulation (DPCM), digital modulation schemes: amplitude, phase and frequency shift keying schemes (ASK, PSK, FSK), matched filter receivers, bandwidth consideration and probability of error calculations for these schemes. Basics of TDMA, FDMA and CDMA and GSM.

Electromagnetics:
Elements of vector calculus: divergence and curl; Gauss� and Stokes� theorems, Maxwell�s equations: differential and integral forms. Wave equation, Poynting vector. Plane waves: propagation through various media; reflection and refraction; phase and group velocity; skin depth.
Transmission lines:
characteristic impedance; impedance transformation; Smith chart; impedance matching; S parameters, pulse excitation. Waveguides: modes in rectangular waveguides; boundary conditions; cut-off frequencies; dispersion relations. Basics of propagation in dielectric waveguide and optical fibers.
Basics of Antennas: Dipole antennas; radiation pattern; antenna gain.



Any further queries on the topics can be written in the chat box or post a comment......

UNDERSTAND WITH ANIMATIONS (JAVA APPLETS)

FOURIER SERIES

DIODE I/P CHARACTERISTICS

HALFWAVE RECTIFIER

FULLWAVE RECTIFIER

RECTIFIER WITH FILTER


NPN BJT

PNP BJT

BJT AS A SWITCH

CC AMPLIFIER

SE AMPLIFIER

COLPITTS OSCILLATOR

HARTLEY OSCILLATOR

N-MOSFET

P-MOSFET

COMMON SOURCE AMPLIFIER

COMMON DRAIN AMPLIFIER

ELECTRONIC DEVICE ANIMATIONS

JFET

BJT

ECE LECTURE VIDEOS FROMM IIT-C

ECE(ELECTRONICS AND COMMUNICATION ENGINEERING)LECTURE VIDEOS
Our IIT's are the best.They have done an excellent job by providing lecture videos on different topics of engineering.

This blog being dedicated to electronics and communication engineering is giving you link to this section of videos from IIT madras


CLICK HERE

M-III ASSIGNMENT

1. page-11……………..eg:7

2. page-12………………..eg:8

3. page-15……………..eg:14

4. page-15 ………EXERCISE QUES:3

5. page-23………….eg:5(ii)

6. page-27…………..eg:10

7. page-33………….eg:21(i),(ii)

8. page-35………….eg:25

9. page-47……………eg:42

10. page-63……………2 proof

11. page-97……………eg:4

12. page-104…………….eg:7

13. page-110………….1.25 proof

14. page-114………….eg:7

15. page-117……………eg:12

Monday, July 20, 2009

GET YOUR RESULTS AT THIS SITE..

http://jntu.ac.in/results/htno.php?ecode=1006-11r08

Thursday, July 2, 2009

Academic schedule for II-1,II-2

Academic schedule for II-1
1 Commencement of class-work 06-07-2009 (MON)

2 1st Spell of Instructions for Units 1,2,3 & 4
06-07-2009 (MON) to29-08-2009 (SAT)08 Weeks

31st Mid Term Examinations **
Timings: 10.00 am To 12.00 Noon (Forenoon Session)
2.00 pm To 4.00 pm (Afternoon Session )
31-08-2009 (MON) to02-09-2009 (WED)03 Days

4 2nd Spell of Instructions for Units 5,6,7 & 8
03-09-2009 (THURS) to28-10-2009 (WED)08 Weeks

5 2nd Mid Term Examinations **
Timings: 10.00 am To 12.00 Noon (Forenoon Session )
2.00 pm To 4.00 pm (Afternoon Session )
29-10-2009 (THURS) to31-10-2009 (SAT)03 Days

6 Preparation and Practical Examinations
02-11-2009 (MON) to14-11-2009 (SAT)02 Weeks

7 End Semester Examinations (Regular)
16-11-2009 (MON) to30-11-2009 (MON)02 Weeks

8 Supplementary Examinations of Second Semester
01-12-2009 (TUES) to12-12-2009 (SAT)02 Weeks

9Commencement of Class work for II & IV Year II Sem. for the
academic year 2009-2010
14-12-2009 (MON)

Academic schedule for II-2

1 Commencement of class-work 14-12-2009 (MON)

2 1st Spell of Instructions for Units 1,2,3 & 4
14-12-2009 (MON) to10-02-2010 (WED)
08 Weeks3 days

3 1st Mid Term Examinations **
Timings: 10.00 am To 12.00 Noon (Forenoon Session)
2.00 pm To 4.00 pm (Afternoon Session )
11-02-2010 (THURS) to13-02-2010 (SAT)
03 Days

4 2nd Spell of Instructions for Units 5,6,7 & 8
15-02-2010 (MON) to10-04-2010 (SAT)
08 Weeks

5 2nd Mid Term Examinations **
Timings: 10.00 am To 12.00 Noon (Forenoon Session )
2.00 pm To 4.00 pm (Afternoon Session )
12-04-2010 (MON) to
14-04-2010 (WED)
03 Days

6 Preparation and Practical Examinations
15-04-2010 (THURS) to24-04-2010 (SAT)
10 days

7 End Semester Examinations (Regular)
26-04-2010 (MON) to08-05-2010 (SAT)
02 Weeks

8 Summer Vacation
10-05-2010 (MON) to04-07-2010 (SUN)
08 Weeks

9 Supplementary Examinations of First Semester
10-05-2010 (MON)22-05-2010 (SAT)
02 Weeks

10Commencement of Class work for III Year - I Sem. for the
academic year 2010-2011
05-07-2010 (MON) --

Wednesday, July 1, 2009

when wille be first year results..

hi frnds..when will be first year results..