Abstract-
A pulse skipping control strategy is proposed to improve efficiency of grid-tied inverters at light loads. To maximize the efficiency of pulse skipping operation mode, three key parameters are identified and optimized based on a loss model, which is developed to find the maximal efficiency points using a three-dimensional search technique. A 200W prototype inverter was setup to verify the proposed control strategy. The experimental results show that the proposed pulse skipping control strategy greatly impr ....etc

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i kindly request me to send Netrwork security protocol with cryptogrphy and RFID systems ppt send to my mail [email protected] ....etc

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i want to know the circuit diagram for zero voltage switching resonant dc page link inverter using auxilary boost converter and also the logic to turn on the switches.please help me finding the solution ....etc

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An Efficiency Security Model of Routing Protocol in Wireless Sensor Networks-IEEE 2-glomosim

Abstract
Routing security is one of the most important considerations in Wireless Sensor Networks(WSNs). Currently, more and more people pay attention to this issue. But most of the secure protocols must use public key and symmetric cryptographies which induce heavy load to nodes in the whole routing stage. In this paper,we propose an Efficiency Security Model of
Routing(ESMR). In routing stage, ESMR only uses public key cryptography when n ....etc

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i need ns2 code for energy efficient aodv protocol ....etc

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Efficiency Improvement of WCDMA Base Station Transmitters using Class-F power amplifiers


Muthuswamy Venkataramani



(ABSTRACT)
Universal Mobile Telecommunications Systems (UMTS) is the preferred third generation (3G) communication standard for mobile communications and will provide worldwide coverage, a convenient software technology and very high data rate. The high data rate, especially, requires the use of bandwidth-efficient modulation schemes such as Quadrature Phase Shift Keying (QPSK). But ....etc

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submitted by :-
Suhail ahmad mansoori


INTRODUCTION
A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam. The hot water or steam under pressure is then usable for transferring the heat to a process. Water is a useful and cheap medium for transferring heat to a process. When water is boiled into steam its volume increases about 1,600 times, producing a force that is almost as explosive as gunpowder. This causes the boiler to ....etc

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Abstract:
new power machine concept has been designed and analyzed for production, and proof of principle subscale tests have been performed, with positive results. The machine design concept is applicable as a compressor, pump, motor, or engine. Simplicity of design based on spherical ball pistons enables a low moving part count, high power to weight ratio, elimination of valve train and water cooling systems, and perfect dynamic balance.

The new design concept utilizes novel kinematic design to completely eliminate inertial loads that w ....etc

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In early 1997, the Internet Engineering Task Force (IETF) established the Multi-protocol Label Switching (MPLS) working group to produce a unified and interoperable multilayer switching standard as each vendor (Cisco Systems, Lucent, and so on) developed a proprietary multilayer switching solution, maintaining the IP control component and label-swapping components in different ways. The majority of these multilayer switching solutions required an ATM transport because they could not operate over mixed media infrastructures, su ....etc

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