Abstract
This seminar describes an approach to harvesting electrical energy from a mechanically excited piezoelectric element. A vibrating piezoelectric device differs from a typical electrical power source in that it has capacitive rather than inductive source impedance, and may be driven by mechanical vibrations of varying amplitude. The harvesting circuit consists of an AC-DC rectifier with an output capacitor, an electrochemical battery, and a switch-mode DC-DC converter that controls the energy flow into the battery. An analytical expre ....etc

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A Digital DC Power Supply (programmable bench power supply unit), hardware version 3.0
Abstract:
A good, reliable and easy to use bench power supply unit is probably the most important and most used device in every electronic lab.
A proper electronically stabilized bench power supply unit is an important but also expensive device. Using a microcontroller based design we can build a power supply which has a lot of extra features, is easy to build and very affordable.
The tuxgraphics digital DC power supply ....etc

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Abstract
This paper proposes a two-phase scheme for removing salt-and-pepper impulse noise. In the first
phase, an adaptive median filter is used to identify pixels which are likely to be contaminated by noise
(noise candidates). In the second phase, the image is restored using a specialized regularization method
that applies only to those selected noise candidates. In terms of edge preservation and noise suppression,
our restored images show a significant improvement compared to those restored by using just nonlinear
filters or r ....etc

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POWER SUPPLY NOISE REDUCTION USING ACTIVE RESISTORS


Introduction

Continual scaling in integrated circuit technology has made it possible to achieve higher transistor density
in a given die area. Even with the lowering of the power supply voltage for newer process nodes, the
maximum power consumption of high-end microprocessors has been projected to continue to increase for
the foreseeable


Resistive Damping

The oscillations in the power supply ....etc

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Hello i need power supply noise reduction using active resistors ppt & document in IEEE format immediately an u please forward that to my email
[email protected] ....etc

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Lazer works in high voltage supply.How can we make high voltage out of 220/110 V AC.Here gives the circuit.You can use this to make high voltage supply.But prevention should be taken to avoid shoking hazards.
The circuit takes 115 V supply and gives to step up transformer. Three diodes and three capacitors are used to eliminate the ripples of AC. ....etc

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hii
i am a new user.i searched for above topic in google.com but not get enough information .please help me ....etc

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Lazer Power Supply

Lazer works in high voltage supply.How can we make high voltage out of 220/110 V AC.Here gives the circuit.You can use this to make high voltage supply.But prevention should be taken to avoid shoking hazards.

The circuit takes 115 V supply and gives to step up transformer. Three diodes and three capacitors are used to eliminate the ripples of AC.

http://pptpdf.net/subcategory.php?categ=unknown&categ_id=1&/Project%20Reports/Electrical-Electronics-Apllied_Electronics-Instrumentation/project%20list1 ....etc

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Dear Madam\sir,

I am a research student. i want the matlab codings for salt and pepper noise removal by median type noise detectors and detail preserving regularization for my project dissertation. ....etc

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Abstract”
This paper presents a simplified sinusoidal uninterruptible power supply (UPS) system. The proposed scheme includes features such as high power factor, low total harmonic distortion and good dynamic response at the ac output voltage. In addition, the scheme has the desirable characteristics of high efficiency, simple circuit and low cost compared with a traditional standalone multiple stages UPS with power factor correction. The paper also presents the circuit operation, the analysis and, experimental results of the proposed U ....etc

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