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IMPATT Diode


Posted by: projectsofme
Created at: Tuesday 21st of December 2010 05:27:17 AM
Last Edited Or Replied at :Tuesday 21st of December 2010 05:27:17 AM
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on

IMPATT diode
IMPATT I-V Characteristics
Small Signal model
Some IMPATT Circuits
Classification
Device structure is based on the doping profile. The three basic types of Impatt diodes are:-
1. Single drift region (SDR) - The SDR diode consists of a single avalanche zone and a single drift zone with p+nn+ structure.
2. Double drift region (DDR) – A DDR diode has a p+pnn+ structure that consist of two drift layers, one for electrons and other for holes on either side of the central avalanche zone.
3. Double avalanche region (DAR) – The DAR diode has a p+n..................[:=> Show Contents <=:]



Good Seminars


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:22:48 AM
Last Edited Or Replied at :Saturday 20th of September 2008 10:22:48 AM
Seminars , Good,
of the talk where you anticipate that some audiences will want additional clarification and/or detail. Have it ready, but don't plan to use it unless it comes up in the talk.

Always keep your eye on the time remaining. If you start to fall behind in your planned pace you should try to adjust your talk by eliminating the least important remaining parts of your talk. Always aim to finish a few minutes early.

End with your conclusion slide. If you have started or plan to begin related research, mention it. Then prepare to kick back and think beyond your paper if that's what the audience ..................[:=> Show Contents <=:]



How to take seminars effectively


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:17:19 AM
Last Edited Or Replied at :Wednesday 29th of July 2015 04:07:09 AM
effectively, seminars , take,
explaining methods and experimental designs
5) At the close of your seminars be certain to summarize the main conclusions and provide the audience with the most significant point(s) from the seminars* (don't leave the audience wondering why they sat through the seminars)

Clarity

1) Speak clearly and 'speak up' - project your voice without shouting at your audience
2) State the objectives, hypotheses and rationale of study right at the start of the talk
3) Be certain to relate the seminars to the larger context (Can we predict something better because this study was conducted? Do h..................[:=> Show Contents <=:]



How to face a seminar


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:15:31 AM
Last Edited Or Replied at :Tuesday 07th of April 2015 12:16:57 AM
seminar, face , how 2 face saminar, emergitics technology ece seminar topics , how to face seminar on stage, steps to face seminar , how to face seminor, how to face seminars , how to face seminar for first time, how to face seminar , presentation on how to face a seminar, how to nface a seminor ,
r two. Below are some reasons why I believe people read poorly:

3). Using Notes - This is the most common way for remembering material. Using notes is better than reading since the speaker can have normal voice inflection and make more effective eye contact. If your notes are on the lectern, you probably won't move very far from them. If notes are in your hand, you probably won't gesture very much.

4).Using Visual Aids As Notes - Simple visual aids can effectively serve as headings and subheadings. Speak to the heading. Say what you want to say and move on. If you forget something, that'..................[:=> Show Contents <=:]



CV TIPS GUIDELINES


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:13:18 AM
Last Edited Or Replied at :Friday 24th of August 2012 06:40:25 AM
GUIDELINES, TIPS ,
uate.
> Don't leave career gaps - if you have spent time traveling, say so.
> Don't lie!..................[:=> Show Contents <=:]



10 tips to take a seminar


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:11:25 AM
Last Edited Or Replied at :Wednesday 29th of July 2015 04:03:52 AM
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p adding new ideas. As you prepare every speech ask yourself the following questions.

In one concise sentence, what is the purpose of this speech?
1) Who is the audience? What is their main interest in this topic?
2) What do I really know and believe about this topic as it relates to this audience?
3) What additional research can I do?
4) What are the main points of this presentation?
5) What supporting information and stories can I use to support each of my main points?
6) What visual aids, if any, do I need?
7) Do I have an effective opening grabber?
In my final summary, ..................[:=> Show Contents <=:]



At the seminar


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:10:09 AM
Last Edited Or Replied at :Friday 25th of March 2011 01:12:46 AM
seminar,
the event you don't have a co-worker's handouts or slides, quickly develop an outline or mind map and do the following:--

a) List your main points and write down a few key words about each
b) Speak spontaneously and confidently from your heart.
c) Trust your experience and knowledge.
d) Focus on your message and not on the fact that you had to rush to put together a presentation
e) Present your main contributions right away.
f) It's extremely important that you emphasize your contribution and distinguish what you've done that adds to the literature.
g) You may want to repeat your l..................[:=> Show Contents <=:]



Important


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:09:08 AM
Last Edited Or Replied at :Tuesday 07th of April 2015 01:00:27 AM
Important, mail goldrule com loc es , contact goldrule com loc es, ethical hacking ,
Hey
If you Ask doubts about the topics just reply belowthe topics i will manage it,
and if you want more materal for particular topics just reply below the topics i will try..................[:=> Show Contents <=:]



INTERVIEW TIPS


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 10:07:54 AM
Last Edited Or Replied at :Tuesday 09th of November 2010 08:35:36 AM
TIPS, INTERVIEW ,
reer. Write down a few points about your strengths and weaknesses so that you have a clear idea of what to say (or not) in the interview.





Examples to consider:

> Self-confidence
> Leadership by example
> Commitment and determination
> Enthusiasm and stamina
> Good judgment and confident decision-making
> Willing to take responsibility
> Initiative and creativity
> Organizational ability
> Sensitivity to people




Ask yourself:

> In which areas can I really improve?
> What were the tasks and situations I had the most difficulty wi..................[:=> Show Contents <=:]



Experimental Theoretical Characterization of CNTs


Posted by: seminar class
Created at: Monday 14th of February 2011 10:29:27 PM
Last Edited Or Replied at :Monday 14th of February 2011 10:29:27 PM
charecterization of cnt ppt, cnt i v characteristics , cntfet technical seminar decomentation, plasma physics , cnt characterization, characterization of cnts ,
ng CNTs using Arc Plasma Method.
• Experimental Characterization using SEM.
• Theoretical Characterization by observing IV characteristics of CNT using virtual nanolab.
• Numerical modeling of CNTFET.
How actually a nanotube is made ???
Classification of CNTs
Single walled CNT Diameter between 1 to 20 nm and length lies between 100 nm to few microns.
Multiwalled CNT consisting of nested coaxial array of single walled nanotubes separated from one another by 0.34 nm.
Experimental approach to CNTs
Applied Methodology
 “Arc Plasma M..................[:=> Show Contents <=:]



IMPATT Diode


Posted by: projectsofme
Created at: Tuesday 21st of December 2010 05:27:17 AM
Last Edited Or Replied at :Tuesday 21st of December 2010 05:27:17 AM
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on breaks down and current flows with only slight increase of voltage. This breakdown is caused by avalanche multiplication of electrons and holes in the space charge region of the junction.
The pn junction in the avalanche breakdown condition exhibits negative resistance characteristics in the microwave frequency range.
Since the negative resistance is based upon avalanche multiplication and transit-time effect of carriers, the device has been called the IMPATT (Impact Avalanche Transit-Time) Diode.
Device Structure

The original suggestion for a microwave device employing transit-t..................[:=> Show Contents <=:]



PRACTICAL TRAINING At Z-LED Light full report


Posted by: project topics
Created at: Saturday 24th of April 2010 10:22:35 AM
Last Edited Or Replied at :Saturday 24th of April 2010 10:22:35 AM
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escents. In 2006 they demonstrated a prototype with a record white LED luminous efficacy of 131 lm/W at 20 mA. Also, Seoul Semiconductor has plans for 135 lm/W by 2007 and 145 lm/W by 2008, which would be approaching an order of magnitude improvement over standard incandescents and better even than standard fluorescents. Nichia Corporation has developed a white LED with luminous efficiency of 150 lm/W at a forward current of 20 mA.
It should be noted that high-power (= 1 W) LEDs are necessary for practical general lighting applications. Typical operating currents for these devices begin at 3..................[:=> Show Contents <=:]



Integrated gate commutated thyristor IGCT Seminar REPORT


Posted by: electronics seminars
Created at: Thursday 31st of December 2009 08:04:04 AM
Last Edited Or Replied at :Thursday 31st of December 2009 08:04:04 AM
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ariation of anode voltage during turn-on process. The lighter shows the variation of anode current during turn-on process of IGCT. When the gate current increases, the anode voltage decreases from its initial value i.e. the voltage applied across the IGCT. The anode current increases from zero to peak value. When the current reaches the latching current value, the device is turned on.
The turn-off waveform of the IGCT is shown below.

The thick line shows the variation of the anode voltage during turn-off. The lighter shows the variation of the anode current..................[:=> Show Contents <=:]



IGCT


Posted by: sonu
Created at: Sunday 18th of October 2009 08:57:16 AM
Last Edited Or Replied at :Tuesday 20th of October 2009 04:40:54 AM
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i wanna noe m..................[:=> Show Contents <=:]



IGCT


Posted by: computer science crazy
Created at: Tuesday 07th of April 2009 01:33:26 PM
Last Edited Or Replied at :Monday 27th of July 2009 01:55:53 AM
igct price , igct manufacturers, igct operation , innovation igct main drives, igct manufacturer , igct i v characteristic, igct igbt , igct basics, igct datasheet , igct fuse, igct applications , igct abb, igct app , igct drive, IGCT , what is igct, ece seminar topics on igct ,
As such, they have only two stable points their characteristics-'on' and 'off'. Every state in between is unstable and results in current filamentation. The inherent instability is worsened by processing imperfections. This has led to the widely accepted myth that a GTO cannot be operated without a snubber. Essentially, the GTO has to be reduced to a stable pnp device i.e. a transistor, for the few critical microseconds during turn-off.

To stop the cathode (n) from taking part in the process, the bias of the cathode n-p junction has to be reversed before voltage starts to build up at the ..................[:=> Show Contents <=:]



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