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Posted by: seminar topics
Created at: Monday 22nd of March 2010 10:59:59 AM
Last Edited Or Replied at :Monday 08th of April 2013 03:28:14 AM
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Volts A.C by step down transformer , then we use voltage regulators and filters with bridge rectifier to convert the A.C into D.C voltage .
For voltage regulation we are using LM 7805 and 7812 to produce ripple free 5 and 12 volts D.C constant supply.
DS 1820 Temperature Sensor:
The DS18S20 digital thermometer provides 9-bit Celsius temperature measurements and has an alarm function with nonvolatile user-programmable upper and lower trigger points. The DS18S20 communicates over a 1-Wire bus that by definition requires only one data line (and ground) for communication with a central micropr..................[:=> Show Contents <=:]


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 01:28:20 PM
Last Edited Or Replied at :Friday 30th of January 2009 01:28:20 PM
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m wires of same size.Scientists had been intrigued with the concept of superconductivity since its discovery in the early 1900?s, but the extreme low temperature the phenomenon required was a barrier to practical and low cost application. This all changed in 1986 when a new class of ceramic super conductors were discovered that ?SUPERCONDUCTED? at higher temperatures. The science of high temperature superconductivity (HTS) was born, and Along with it came the prospect for an elegant technology that promises to ?supercharge? the way energy is generated, delivered and used. At the heart of high ..................[:=> Show Contents <=:]


Posted by: seminar projects crazy
Created at: Friday 30th of January 2009 12:58:28 PM
Last Edited Or Replied at :Saturday 08th of December 2012 03:28:21 AM
CRYOGENICS, advantages and disadvantages of cryogenics , seminar topics on cryogenics, cryogenics ppt chemical seminar topic , air cryogenic distillation column pdf scribd, cryonics abstract doc , methods to produce cryogenic temperatures, cryogenic absolute zero temperature , simple linde hampson system in cryogenics, cryogenics seminar topics list , cryogenics seminar, cryogenics , seminar topics about criogenics, cryomilling , cryogens chemical meaning, cryogenics and its space applications , nitrogen cooling system, cryogenic seminar on low temperature of carbon steel increase , that part of study of cryogenic engine which shows effect of chemistry on human health,
ed in different fields of production, transportation, medicine, aerospace, physics research etc. Rocket propulsion is imparting force to a flying vehicle such as missile or spacecraft. Different types of rockets and their parts are explained. Cryogenics has future applications in many fields like superconductivity and propulsion fields. Cryogenics is being applied to variety of research areas; a few of which are: food processing and refrigeration, space craft life supporting system, space simulation, microbiology, medicine, surgery, electronics, data processing and metal working. Rocket propul..................[:=> Show Contents <=:]


Posted by: Computer Science Clay
Created at: Sunday 25th of January 2009 01:48:14 AM
Last Edited Or Replied at :Tuesday 22nd of March 2011 12:50:38 AM
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gy storage (SMES) coils would be charged during off peak hours by using power from the base load generating systems and then would be discharged during hours of peak demands. The high efficiency ( 95% ) of the SMES system makes possible large scale load leveling which may in turn reduce many peaks generating units in redundancy.

A wire carrying electric current generates a magnetic field. The higher the current, the stronger is the generated field. The current carrying wire, wrapped as a coil is called the solenoid is proportional to the curren..................[:=> Show Contents <=:]

Tamper Resistance

Posted by: computer science crazy
Created at: Sunday 21st of September 2008 11:38:04 PM
Last Edited Or Replied at :Sunday 21st of September 2008 11:38:04 PM
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ands of another, with the assurance that the second party cannot modify/hack the device. First, we outline the major attacks that threaten the security of an embedded system.

The vulnerability landscape of an embedded system is a vast expanse of attacks. A good understanding of the threats is necessary so that countermeasures can be devised to protect against threats that pose the greatest risk. Second, we present countermeasures and discuss their effectiveness in protecting the crown jewels of an embedded system: boot code, operating system software and embedded hardware. A clear understa..................[:=> Show Contents <=:]

Electronics seminar lists5

Posted by: computer science crazy
Created at: Sunday 21st of September 2008 01:07:08 PM
Last Edited Or Replied at :Sunday 13th of March 2011 09:55:45 AM
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u want to get more information about this topics ,just reply with particular name of the topic
Tracking and positioning of mobiles in telecommunication
HEMT Modeling and Fabrication
The TIGER SHARC Processor
Plastic circuitries
Multimedia messaging Service
Real-Time Image Processing Applied To Traffic
Computer Aided Field Of Vision
High Temperature LVDT
Nanotechnological proposal of RBC
GSM Security and Encryption
Nanotechnology Assembler Design
The Thought Translation Device (Ttd)
System on chip
Optical Coherent Tomography
Deep-Submicron Eff..................[:=> Show Contents <=:]

PPTC Devices for Protection of Battery Packs

Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:34:16 PM
Last Edited Or Replied at :Monday 22nd of October 2012 01:40:04 AM
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primary protection.

Laboratory overcharge testing at 25?C,12V demonstrated that PPTC devices reduced maximum cell temperature by 40?-50?C, while also helping to prevent bulging, rupture, seperator melting and cell shut down.

Ultimately, pack designers must decide what level of protection is required for their application and only a system test can determine whether or not a specific protection device is appropriate.

PPTC devices h..................[:=> Show Contents <=:]

Magnetic Refrigeration

Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:37:41 PM
Last Edited Or Replied at :Monday 11th of March 2013 04:11:11 AM
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field which is apparent as a change in its temperature. This effect is obeyed by all transition metals and lanthanide-series elements. When a magnetic field is applied, these metals, known as ferromagnets, tend to heat ..................[:=> Show Contents <=:]

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