Practical Implementation Of A High-frequency Current Sense Technique For VRM
presented by :
Sarath T S
AE&I
College Of Engineering, Trivandrum3


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Overview

Introduction
Traditional methods
DCR method
Theoretical basis analysis
Effect of temperature
Current sense methods comparison
Problems and solutions
Experimental results ....etc

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A High Data Rate Frequency Hopping Modulation Scheme
Theme:ECE/Digital Communications

Submited By:
Hemanth Patnala
R.V.Seshu Kumar
Sir C.R.R. College Of Engineering,
Eluru-534002
ABSTRACT
There is a need to select the 'first step up' modulation scheme for higher data rate frequency hopping systems. This is seen as one step in a longer journey where considerably higher data rates are used. In order to make this progression viable, the first step should be taken with a well proven modulation scheme. An ....etc

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The High frequency attenuation in shielded distribution cable has been extensively studied. But in the case of solid dielectric cable, this has not been done. A solid dielectric cable has a bit more complex structure including the semiconducting “bedding” layers and a moisture barrier.high frequency loss is created by these sources.The purpose of these bedding layers is to seal the cable against moisture ingress and also accomodate for the thermal expansion of the cable. The cables studied here are the ones with a corrugated copper sheat ....etc

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Study of interaction of pacemaker electrode with high frequency RF fields
The influence of radio-frequency fields on pacemaker operation has been studied by many. The need to know about influence of cellular phones on the device operation is the driving force behind these studies. This is serious concerning the safety of the patients. a wide band behavior of pacemaker lead is described in this article to identify and isolate the dangerous frequency bands in the spectrum. Medical and engineering sciences use completely different method ....etc

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High frequency inverter design for large-signal characterization of domestic
induction heating load
Abstract –
Current research topics in the field of domesticinduction heating entail analytical study of inductor-potcoupling behavior which must be verified with experimentalresults. Small-signal measurements are easily achieved up to 1MHz with commercial LCR meters. On the other hand, largesignalexperimentation requires a custom made measurementtest bench. Whatever the approach selected to design thissystem, the ....etc

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DESIGN AND DEVELOPMENT OF HIGH-FREQUENCY THERMOACOUSTIC ENGINES FOR THERMAL MANAGEMENT IN MICROELECTRONICS
SEMINAR REPORT
Submitted by
VIBIN KOSHY THOMAS
S7-ME
Department Of Mechanical Engineering
College of Engineering, Thiruvananthapuram – 16
OCTOBER 2010





ABSTRACT

Thermoacoustic heat engines provide a practical solution to the problem of heat management in microcircuits where they can be used to pump heat or produce spot cooling of specific circuit elements. There are ....etc

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Sun Spot (Sun Small Programmable Object Technology) is a wireless sensor network (WSN) mote developed by Sun Microsystems. The device is built upon the IEEE 802.15.4 standard. Unlike other available mote systems, the Sun SPOT is built on the Java 2 Micro Edition Virtual Machine (JVM).

The Sun SPOT project explores wireless transducer technologies that enable the emerging network of things. We are building a hardware and software research platform to overcome the challenges that currently inhibit development of tiny sensing devices.

These ....etc

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Sun Spot (Sun Small Programmable Object Technology) is a wireless sensor network (WSN) mote developed by Sun Microsystems. The device is built upon the IEEE 802.15.4 standard. Unlike other available mote systems, the Sun SPOT is built on the Java 2 Micro Edition Virtual Machine (JVM). The Sun SPOT project explores wireless transducer technologies that enable the emerging network of things. We are building a hardware and software research platform to overcome the challenges that currently inhibit development of tiny sensing devices. These change ....etc

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A Technique for Orthogonal Frequency Division Multiplexing
Frequency Offset Correction

Abstract:
The Orthogonal Frequency Division Multiplexing (OFDM) is a Multi Carrier Modulation technique employing Frequency Division Multiplexing of orthogonal subcarriers. It is also sometimes called as discrete multitone modulation (DMT). It is better than CDMA in high bit rate and Broadband Communications .It is a multi carrier technique, which is very sensitive to Frequency Offset between transmitter and receiver. Th ....etc

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PRESENTED BY
T.SIVAPRIYA
G.SUJITHA
V.SATHYAS.
NANDHINI


HIGH FREQUENCY AMPLIFIER
Objective
 To amplify the low frequency sound through the high sensitivity microphone.
 To provide a very clear voice of any soft and unpleasant sound using condenser microphone.
 R6-C4 network is used to RF-decouple positive-supply pin 6 and R8-C7 is an optional Zobel network that ensures high frequency stability when feeding an inductiveheadphone load.
 Capacitor C6 (22μF, 16V) wired between pin 7 ....etc

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