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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 ,
(Forward Bias )
 Since unlike charges attract, the positive side of the bias-voltage source attracts the electrons from the N-Region into the P-Region.
 The holes in the P-Region provides a medium for electrons to move through the P-Region. The electrons move from hole to hole on to the left.
 As they move they leave holes behind. The holes ellectively not actually move towards the pn junction.
 This is called hole current.
Effect of Forward Bias on the Depletion Region
 As more electrons flow into the depletion region, the number of positive ions is reduced..................[:=> 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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uired for the design are taken from the drafted design
The analysis of spindle assembly includes:
¢ Analysis of spindle deflection due to tensioning of belt
¢ Spindle analysis for deflection due to axial and radial forces
¢ Based on deflection decide an optimum positioning of ..................[:=> 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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t any angle without degrading the picture quality even at 90 degree angles.

It also has the unique ability to use less energy because of how its made up and has better response time than other 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

Callister William D. Jr and Rethwisch David G. (2008). Fundamentals of
Materials Science and Engineering An Integrated Approach. John Wiley and Sons inc. (2007). Pg 777

O. Prache, Active matrix molecular OLED microdisplays, Displays Volume 2..................[:=> 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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een proposed. However, these terrestrial ..................[:=> 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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lso explained...................[:=> 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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ro luminescence displays. Though not commercialised yet, these have proved to be a mile stone in the filed of flat..................[:=> 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
OPTOELECTRONICS, LEAP , PHOTOTRANSISTOR phototransistor arduino phototransistor array phototransistor applications phototransistor amplifier circuit phototransistor as a switch phototransistor anode cathode phototransistor and ir led phototransistor application notes phototransistor avr phototransistor and photodiode phototransistor datasheet phototransistor detector phototransistor definition phototransistor darlington infrared emitter and phototransistor detector ir phototransistor detector ir ph, opto electronics seminar , opto electronics, advandages of photo trasnsistor , phototransistor biasing, photo diode and photo transister ppt , seminar topics for optoelectronics, sensitive phototransistor circuit , photo transistor speed, phototransistor ppt , infrared emitter diode with transistor amplifier circuits, phototransistor advantages , ir photo transistor ppt, photo diode ppt , modes of phototransistor, optoelectronics phototransistor , phototransistor rise time, phototransistor ,
transistor. For each illumination level, the output is defined by the area of the exposed collector-base junction and the DC current gain of the transistor. The base current from the incident photons is amplified by the gain of the transistor, resulting in current gains that range from hundreds to several thousands.
Principle:

The actual operation of a phototransistor depends on the biasing arrangement and light frequency. For instance , if a PN junction is forward biased, the increased current through the junctions due to incident light will be relatively insignificant. On ..................[:=> 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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technology that exploits the quantum propensity of the electrons to spin as well as making use of their charge state. The spin itself is manifested as a detectable 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-volatil..................[:=> Show Contents <=:]



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