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Junction Diode


Posted by: seminar class
Created at: Thursday 07th of April 2011 02:27:20 AM
Last Edited Or Replied at :Thursday 08th of November 2012 01:26:00 AM
pn junction diode , special purpose diode ppt, pm junction diode ,
many holes (majority carriers) from the impurity atoms and only a few thermally generated free electrons (minority carriers).
 The n region has many free electrons (majority carriers) from the impurity atoms and only a few thermally generated holes (minority carriers).
 Diodes (The PN Junction)
 Diodes (The Depletion Region)
 Diodes (The Barrier Potential )
 Any time there is a positive charge and a negative charge near each other, there is a force acting on the charges.
 In the depletion region there are many positive charges and many negative charges on opposite si..................[:=> Show Contents <=:]



Design and analysis of spindle with Spm-special purpose machine


Posted by: project report maker
Created at: Monday 05th of July 2010 12:15:24 PM
Last Edited Or Replied at :Sunday 25th of July 2010 10:19:44 AM
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in which it is used for fine boring to reduce the oil consumption of the two wheeler.
The objective of my project is to generate a parametric assembly drawing of spindle assembly using Pro-E, and analysis of spindle assembly using ANSYS.
Firstly, we created a solid model of the crankshaft using designing software
Pro-e. Then the model is imported into Ansys and analyzed by applying necessary conditions, which were considered in designing it and then checked for the strength and life. The specifications required for the design are taken from the draf..................[:=> Show Contents <=:]



Flexible Organic Light Emitting Diode full report


Posted by: project topics
Created at: Saturday 10th of April 2010 01:04:51 PM
Last Edited Or Replied at :Wednesday 14th of March 2012 11:36:34 PM
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er LEDâ„¢s.

The problem of the longevity of the Organic LED has been over come by adding a thin sheet of metal in with it.




References ..................[:=> Show Contents <=:]



Using Light Emitting Diodes for Intersatellite Links full report


Posted by: project topics
Created at: Saturday 03rd of April 2010 01:08:46 PM
Last Edited Or Replied at :Saturday 03rd of April 2010 01:08:46 PM
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for acquisition and tracking; connecting through the atmosphere adds additional signal loss and interference. 1

2 (b). Short-distance ISLs,
etween formation-flying satellites that are relatively near to each other (tens of km or less) and stationkeeping together. The satellites are close enough to be able to interact to create a 'virtual satellite' cluster that is made up out of all the communicating satellites, and is more than the sum of its parts. This clustering can also be applied to nearby stationkeeping geostationary satellites. Formation flying is the foundation of the DARPA F6 ef..................[:=> Show Contents <=:]



SPECIAL PURPOSE MACHINES


Posted by: project topics
Created at: Friday 02nd of April 2010 04:50:39 AM
Last Edited Or Replied at :Sunday 06th of March 2011 11:11:00 PM
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duces the entire equipment size.
Integrated starter generator which is used in electric vehicles acts as a bidirectional energy converter as a motor when powered by the battery or a generator when driven by the engine. Linear motors are used to propel high speed MagLev trains. Micro motors plays an important role in computer hard drives, optics, sensors and actuators.A special type of outer rotor motors used to drive the polygonal rotating mirrors which are mounted directly on the rotor in laser printers.
Our paper tries to introduce some of these machines and their applications in v..................[:=> Show Contents <=:]



Organic light emitting diode OLED seminar report


Posted by: electronics seminars
Created at: Friday 01st of January 2010 12:49:12 AM
Last Edited Or Replied at :Monday 01st of August 2011 12:07:30 AM
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ing diode (OLED) display technology has been grabbing headlines in recent years. Now one form of OLED displays, LIGHT EMITTING POLYMER (LEP) technology is rapidly emerging as a serious candidate for next generation flat panel displays. LEP technology promises thin, light weight emissive displays with low drive voltage, low power consumption, high contrast, wide viewing angle, and fast switching times.
One of the main attractions of this technology is the compatibility of this technology with plastic-substrates and with a number of printer based fabrication techniques, which offer the possi..................[:=> Show Contents <=:]



PHOTOTRANSISTOR A LEAP OF OPTOELECTRONICS


Posted by: computer science crazy
Created at: Friday 17th of April 2009 07:55:58 AM
Last Edited Or Replied at :Friday 17th of April 2009 07:55:58 AM
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alled dark current. This current consists of leakage current of the collector base Jn multiplied by the dc current gain of the transistor. due to the presence of this current the phototransistor is not considered as completely off .The dark current is temperature dependent. It is usually specified at 25°C.

Speed of response:

The speed of response of a phototransistor is totally dominated by the capacitance of the collector - base Jn and the value of load resistance. The phototransistor takes a certain amount of time to respond to sudden Changes in light intensity...................[:=> Show Contents <=:]



Spintronics


Posted by: computer science crazy
Created at: Sunday 21st of September 2008 12:16:41 AM
Last Edited Or Replied at :Friday 12th of October 2012 12:36:55 PM
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able weak magnetic energy state characterised as spin up or spin down.

Conventional electronic devices rely on the transport of electrical charge carriers - electrons - in a semiconductor such as silicon. Device engineers and physicists are now trying to exploit the spin of the electron rather than its charge.
Spintronic-devices combine the advantages of magnetic materials and semiconductors. They are expected to be non-volatile, versatile, fast and capable of simultaneous data storage and processing, while at the same time consuming less energy. Spintronic-devices are playing an inc..................[:=> Show Contents <=:]



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