sir I want seminar topics on water supply engineering .plz help me. ....etc

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Am rema,want to know about an efficient common mode hybrid filter used in SMPS for my seminar work.

Abstract obtained from IEE is After the study of electromagnetic interference (EMI)
mechanisms in switching mode power system (SMPS) and the soft
switch, this paper proposes a novel hybrid filter (HEF) to suppress
commend mode EMI in SMPS. The HEF consists of a passive filter
and an active filter. Matching network, which can reduce
impedance mismatching effects, is introduced in passive part. A
feed-forward active filter is adopted ....etc

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simple power supply resumption alarm pdf

The circuit of power resumption alarm shown here is very simple, where IC1 is wired in a special kind of mode. When power supply resumes, pin 2 of IC1 is grounded through C1 and pin 3 goes high. This makes reset pin 4 to go high for about 10 seconds. When the capacitor C1 charges to two-third of the supply voltage, output of IC1 goes low, grounding the reset pin 4 and thus disabling the entire circuit.

The alarm circuit is wired around a second timer IC, IC2. Here it is used as an astable multivibrator ....etc

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Triple Power Supply
This low-cost, multipurpose
power supply fulfils the requirements
of almost all laboratory
experiments. Nonetheless, it can
be easily fabricated by hobbyists.
A single transformer is used to
build this triple power supply. Regulator
IC LM317 generates variable power
supply of 1.25 to 20V, 1A. The dual
12V, 1A power supply is generated
by regulators 7812 and 7912. Similarly,
dual 5V, 1A power supply is generated
by regulators 7805 and 7905.
On / off switches (S2 through S4)
select the required po ....etc

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to get information about the topic lazer torch based voice trasmiter and receiver full report ,ppt and related topic please refer page link bellow

http://seminarsprojects.net/Thread-laser-torch-based-voice-transmitter-and-receiver-full-report

http://seminarsprojects.net/Thread-laser-torch-based-voice-transmitter-and-receiver-full-report?page=10

http://seminarsprojects.net/Thread-laser-torch-based-voice-transmitter-and-receiver-full-report?page=9 ....etc

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hello sir i am eager to know about the seminar report on UPS.
could you please send a report ....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 UPS sch ....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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Programmable Power Supply (PPS)

Introduction
In laboratory and experimental work, the source of energy electric is very important.
Most products in electronics require using the current and voltage source. I propose to develop a programmable power supply as my senior project. The requirement I propose for this project is that the programmable power supply will provide the user an output voltage from one to fifteen volts at a current level up to 1 amp.
Description
For the user interface, the power supply will con ....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 voltage across the chip ....etc

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