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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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Double avalanche region (DAR) – The DAR diode has a p+nipn+ structure that consist of one drift zone sandwiched between two avalanche zones. The electrons and holes from the two junctions travel across the central i-region in opposite directions and deliver power.
Applications
These diodes make excellent microwave generators for many applications like:-
1. Parametric amplifier,
2. Parametric up converter,
3. Parametric down converter,
4. Negative resistance parametric amplifier.
Summary
IMPATT stands for Impact Avalanche And Transit Time
Operates..................[:=> Show Contents <=:]



Network Traffic Analysis


Posted by: mechanical engineering crazy
Created at: Wednesday 05th of August 2009 06:45:27 AM
Last Edited Or Replied at :Wednesday 05th of August 2009 06:45:27 AM
network traffic compression , network traffic congestion, what is network traffic engineering , nsasoft network traffic emulator, network traffic encryption , network traffic simulator, network traffic engineering , network traffic control software, network traffic controller , network traffic check, network traffic counter , network traffic calculator, network traffic classification , network traffic characteristics of data centers in the wild, network traffic capture , network traffic control, Network Traffic , Analysis, Traffic , Network, computer engineering network traffic analysis project ,
f packet capture software and the fundamentals of basic network traffic analysis, including identifying communication issues, monitoring network performance, verifying network security and tracking communication transactions...................[:=> Show Contents <=:]



Spectral and nonlinear optical characteristics of nanocomposites of ZnO


Posted by: super
Created at: Saturday 13th of June 2009 10:22:20 PM
Last Edited Or Replied at :Saturday 13th of June 2009 10:22:20 PM
ZnO,
acknowledges UGC for research fellowship.
1
Y. Kayanuma, Phys. Rev. B 38, 9797 1988 .
2
Z. L. Wang, Mater. Today 7, 26 2004 .
3
A. P. Alivisatos, J. Phys. Chem. 100, 13226 1996 .
4
L. E. Brus, J. Chem. Phys. 79, 5566 1983 .
5
M. V. Rama Krishna and R. A. Friesner, Phys. Rev. Lett. 67, 629 1991 .
6
U. Kreibig and M. Vollmer, Optical Properties of Metal Clusters
Springer, Berlin, 1995 .
7
B. Kraeutler and A. J. Bard, J. Am. Chem. Soc. 100, 4317 1978 .
8
A. E. Hichou, A. Bougrine, J. L. Bubendorff, J. Ebothe, M. Addou, and M.
Troyon, Semicond. Sci. Technol. 17, 607 2002 .
9
X..................[:=> Show Contents <=:]



Electrical Characteristics of n-ZnOp-Si Heterojunction Diodes


Posted by: seminar projects crazy
Created at: Saturday 13th of June 2009 03:37:49 PM
Last Edited Or Replied at :Saturday 13th of June 2009 03:37:49 PM
Diodes , Heterojunction, n ZnOp Si , Characteristics, Electrical , band structure of zno si heterostructure, heterojunction in zno p si pdf , band parameter of semiconducter used in heterostructure, diode bas sur zno si n heterojonction these , l heterojonction zno si pdf, zno si heterojunctions ,
asing oxygen pressure
166
during growth, as did the electron concentration.
167
This means that films grown at lower oxygen pres-
168
sure had a larger band gap due to the enhanced
169
carrier concentration in the film. This increase in
170
the band gap accompanied by an enhanced carrier
171
concentration can be explained using the BM
172
shift.
29
As is well known, this model relies on the
173
effective mass approximation (EMA) in which the
174
wavefunctions are represented by plane waves and
175
the conduction and valance bands are taken to be
176
parabolic near the B..................[:=> Show Contents <=:]



Electrical Characteristics of n-ZnOp-Si Heterojunction Diodes


Posted by: seminar projects crazy
Created at: Saturday 13th of June 2009 03:34:37 PM
Last Edited Or Replied at :Saturday 13th of June 2009 03:34:37 PM
Diodes , Heterojunction, n ZnOp Si , Characteristics, Electrical , impedance heterojunction,
TE
D
PROOF
145
5.6 · 10
5
ohm with increasing oxygen partial pres-
146
sure from 0.003 mbar to 0.007 mbar. Figure 2b
147
shows the variation of resistivity and the electron
148
mobility for the ZnO thin films with respect to the
149
oxygen pressure. It can be seen from this figure
150
that, while the resistivity increased, the mobility
151
decreased when the oxygen pressure used during
152
the deposition was increased. Hall measurements
153
confirmed the n-type conductivity of the ZnO films.
154
Using these Hall measurements, the carrier con-
155
centration wa..................[:=> Show Contents <=:]



HOSPITAL WASTE MANAGEMENT


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 12:58:54 PM
Last Edited Or Replied at :Wednesday 23rd of February 2011 09:54:13 PM
MANAGEMENT, WASTE , HOSPITAL, hospital waste management ppt , hospital, biomedical waste management in hospitals ppt , biomedical waste management project topics, characteristics of a good waste disposal system of a hospital , hospital waste management in india ppt, hospital biomedical waste disposal and ppt , hospital wastw management ppt, metods disposal solid waste hospital ppt , hospital waste management project report, hospital waste management project pdf file , powerpoint presentation on hospital waste management system, powered by mybb medical hospitals , project report on waste management in hospital, topics on waste management ppt , research paper topics on waste disposal of hospital,
ion was given to the disposal of hospital waste, which contains hazardous waste, which contains hazardous waste materials from various sources (eg: used syringes and needles, pus and blood soaked cotton etc.). Usually the waste is disposed in the community bin along with domestic waste creating environmental pollution. Incineration and land filling are the most widely used technique for disposal hospital waste. Though these methods have several inherent advantages, indiscriminate and improper application of these methods may lead to considerable harm to the society. All these factors receives ..................[:=> Show Contents <=:]



Magnetic Amplifiers


Posted by: seminar projects crazy
Created at: Monday 26th of January 2009 10:40:13 PM
Last Edited Or Replied at :Monday 26th of January 2009 10:40:13 PM
Amplifiers, Magnetic , magnetic amplifier doc, series and parallel connections magnetic amplifier , magnetic amplifier, magnetic amplifier characteristics , characteristics magnetic amplifier, characteristics of magnetic amplifier , some points for seminar on magnetic amplifier, seminar topic on magnetic amplifiers , current measurement magnetic amplifier, measuring current low currents transformer magnetic amplifier , magnetic amplifier seminar, seminar on magnetic amplifier , mag amp priciples, magamp post regulator , amplifying magnetic fields, andrew piaskowski magnetic amplifier ,
which voltage the mag amp switches on.

A relatively small DC current on the control winding is able to control or switch large AC currents on the AC windings. This results in current amplification.

Applications

Magnetic amplifiers were used extensively as the switching element in early switched-mode (SMPS) power supplies, as well as in lighting control. They have been largely superseded by semiconductor based solid-state switches, though recently there has been some regained interest in using mag amps in compact and reliable switching power supplies. PC ATX p..................[:=> Show Contents <=:]



Low-Voltage Differential Signaling LVDS


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:42:32 AM
Last Edited Or Replied at :Monday 04th of July 2011 12:17:18 PM
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obust transmission signals
e) Ability to be integrated into system level ICs

LVDS technology allows products to address high data rates ranging from 100's of Mbps to greater than 2 Gbps. For all of the above reasons, it has been deployed across many market segments wherever the need for speed and low power exists.

Consumers are demanding more realistic visual information in the office and in the home. This drives the need to move video, 3D graphics and photo-realistic image data from cameras to PCs and printers through LAN, phone, and satellite systems to home set-top boxes and digital ..................[:=> Show Contents <=:]



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