Saturday, October 31, 2009

DIFFERENCE BETWEEN PHASE AND GROUP VELOCITY

The document gives the mathematical distinction between the most commonly used terms associated with the velocity of propagation inside an waveguide.

Diff Betn Phase and Group Vel

Sunday, October 11, 2009

DC REGULATED +5V,+12V,-12V POWER SUPPLY

The circuit description of the DC Regulated Power Supplies is attached to this blag along with the datasheets of the two regulator ICs used. Download it and give it a read.

Dc Regulated Power Supply


IC 7812 DATASHEET HERE
IC 7812


IC 7912 DATASHEET HERE
IC 7912

Friday, September 4, 2009

PROPAGATION OF EM WAVES PPT FILE

The ppt file contains the basic description about the generation, characteristics, overview and reception of the different effects and terminologies associated with the propagation of EM waves through space and the earth.
Propagation of Em Waves

MATHEMATICAL CORRELATION..

Somebody asked me about the association of electric and magnetic field inside a conductor.Well, the correlation between the two is shown mathematically by the help of the laws of electromagnetics in the pdf below.
EM Relations in a Conductor

MOSQUITO REPELLENT’-------A LITTLE ‘BIG’ THING.

Recently, I went to Guwahati to appear for an exam.
On my voyage, I came in contact with personal sellers of a certain type of repellant. She was neatly, officially dressed up, grin across her face, quite inspirational at the first look. She approached me and asked for a few minutes of my time. I was awaiting the due Network night-super schedule, so I agreed.
The next few minutes she took up all the efforts of explaining to me about the ‘mosquito repellent’ product she was selling. From our conversation, I came to know that she was not from the technical background, so she couldn’t explain about the internal principles of generation of the special ultrasonic wave which keeps the mosquitoes at bay.
I decided to carry the research myself and what I found out is a real simple laboratory principle…a basic electronics application. To know more about the working of these simple selling devices, download the pdf attached to this document. So that the next time you meet them, you should be explaining to them what they fail to explain to you.

Mosquito Repellent

SOLDERING PRACTICE THEORY

Soldering practice is the oldest mathod of making connections in a general purpose veroboard or even in the Printed Circuit Board. The description of the important components and materials used in general soldering practice in your laboratories is detailed in the pdf.
Soldering

NUMERICAL SHEET 3

Numerical Sheet3

NUMERICAL SHEET 2

Numerical Sheet2

Thursday, September 3, 2009

Friday, August 21, 2009

EverythinG you need to know about Swine-flu

The article appeared at TNN 10 August 2009, 05:30am IST, Times of India website.
The article describes the spread of the newly detected influenza virus, its symptoms, measures to avoid and combat it. Download the pdf file to know everything you need to know about Swine-flu and avoid it.
Swine-flu

Thursday, August 13, 2009

youR Queries Answered..

mY reply message to Anonymous:

Q: nothing appears,net is unable 2 open anything good

A: Hostel Wi-fi is very slow...so to download the files,click on the "Oscilloscope manual" link just below the "Download the Oscilloscope manual pdf file" heading and it will open on a different page on Scribd.com
it has a download link at the left side...click it and the download will start automatically. Download the pdf file.
Try when the internet link is fast. Post comments, queries, votes.
All are invited.
Thank you.

Saturday, August 8, 2009

FRONTIERS OF ECE WORKSHOP

The Electronics And Communication Engineering Department, NERIST is organising a Workshop on the fundamentals of Semiconductor Composition, fabrication and the internal architecture behind the modern nanoscale developments in fabrication processing.
It was a combined effort by the


"Institute of Radio Physics and Electronics"
University of Calcutta
(a diamond jubilee celebration program)


The workshop was on the "FRONTIERS OF ECE WORKSHOP".

The slides and the materials will be available on the blog within few days.
ANYONE INTERESTED IN ATTENDING THE SEMINAR CAN ATTEND IT TOMORROW FROM 9AM IN THE NEW SEMINAR HALL.

Wednesday, August 5, 2009

mY ConCept on "Perfection".

The essence of perfection is a novelty present within a human being.
The desire for success is a glamour which makes the essence.
The ability to see through simple equations make the simple desire alive.
The simple “ I CAN DO IT ” makes you doit, actuates your ability to do these things.
And it all happens if you give a simple try.
JUST GIVE A TRY ON SOMETHING YOU BELIEVE IN, BELIEVE IN YOUR THOUGHTS AND “SIMPLY DO IT”.