Here’s a stepper motor controllerbased on 89C51 microcontroller tocontrol the rotation of a DC steppermotor in clockwise and anti-clockwisedirections. The controller is simple andeasy-to-construct, and can be used in manyapplications including machine control androbotics for controlling the axial rotation inXY plane. A similar circuit can be added tocontrol the rotation of the motor in eitherXZ or YZ plane.Fig. 1 shows the block diagram of thestepper motor control system. The powersupply section (in Fig. 2) consists of a stepdowntransformer ....etc

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Current-Fed Resonant Full-Bridge Boost DC/AC/DC Converter
INDIRECT dc/ac/dc converters utilizing an isolation transformer
are widely used in different applications, such as
battery chargers and dischargers, uninterruptible power systems,
alternative energy systems, hybrid electric vehicles, and
medical X-ray imaging.
In the case of the applications where low input voltages have
to be converted to high output voltages, current-fed converters
are used, whereas in the case of higher power applications, fullbridge
boost conv ....etc

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POWER EFFICIENT WIRELESS DATA LINKS FOR BIOMEDICAL IMPLANTS
Presented by:
Arun Vargis Thomas
S7-T1,
#12
CET

OVERVIEW
Biomedical implants
Relevance of power efficient implants
Technology used
Implementation
Performance
Conclusion.



BIOMEDICAL IMPLANTS
A device fitted inside human body to check the internal conditions.
Mostly electronic.
Size kept as minimum as possible.


IMPORTANCE OF POWER- EFFICIENT IMPLANTS
Battery Life of implants is Limit ....etc

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rc coupled amplifier circuit using transistor bc548 ....etc

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Integrated Circuits and Applications
Voltage Controlled Oscillator
In RC oscillators frequency depends on RC
time constant
In some applications like FM, tone generators, FSK etc. frequency needs to
be controlled by input voltage known as controlled voltage
This is achieved by VCO also known as V to F convertor
eg. NE/SE 566 VCO which provides simultaneous Square and Triangular
wave outputs as a function of input voltage
Voltage Controlled Oscillator
Voltage Controlled Oscillator
....etc

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PRESENTED BY:
T. Vennela


ABSTRACT:
The electric power supplied by a photovoltaic power generation system depends on the solar radiation and temperature. Designing efficient PV systems heavily emphasizes to track the maximum power operating point.
This work develops a three-point weight comparison method that avoids the oscillation problem of the perturbation and observation algorithm which is often employed to track the maximum power point. Furthermore, a low cost control unit is dev ....etc

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Enhancing Iris Biometric Recognition System with Cryptography
and Error Correction Codes: A Preliminary Study

Abstract
Major challenge on iris and most biometricidentifier is the intra user variability in the acquired identifiers.Iris of the same person captured in different time may differ dueto the signal noise of the environment or the iris camera. In ourproposed approach, Error Correction Code, ECC is thereforeintroduced to reduce the variability and noise of the iris data. Inorder to find best system performance, the approach ....etc

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Kindly send me the Anfis toolbox in scilab iin detail like matlab . ....etc

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Seminar Report On SWITCH MODE POWER SUPPLY
ABSTRACT
The report is an overview of Switch Mode Power Supply abbreviated as SMPS. The purpose of report is to provide a general understanding of SMPS and its applications. There is a brief discussion of historical development of SMPS, followed by the common topologies of the same. The principle of operation is described which is almost same for all the topologies. Then the steady state analysis is discussed to have an insight of the operation under ideal and real conditions. The ....etc

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requirment for the seminaar iin college....i m in 3rdyear
in gnitcolg....and looking for ppt onpistonless pump
....etc

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