what is the basic principle of electrical vibrator ....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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....etc

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ABSTRACT



Because of high requirements in power, efficiency, installation space and weight, the design of electrical machines for hybrid electrical vehicles is a particular challenge. This seminar describes a comparative study allowing the selection of the most appropriate electric-propulsion system for a parallel hybrid electric vehicle (HEV). This seminar is based on an exhaustive review of the state of the art and on an effective comparison of the performances of the four main electric propulsion systems, namely the d ....etc

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1.Zero voltage regulation in a transformer occurs at :
(A)zero p.f. lead 
(B)unity p.f.
(C )leading p.f.
(D)lagging p.f.

2.A parallel plate capacitor has 15 p.F capacitance. If the linear dimensions of the plate are doubled and the distance between the plates are also doubled, then new value of capacitance would be :
(A)15uF
(B)30 uF
(C )60 uF
(D)7.5 u.F

3.Resistance of a 230 V 100 W bulb is R1 and that of a 230 V 75 W is R2. Then,
(A)R1= R2
(B)R1 > R2
(C )R1 < R2
(D)R1 - 2R2

4.The current in a series ....etc

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My self Amit Acharjee from WestBengal India and doing AMIE.I need to do project for it.I want to know how can I make a solar panel based power supply sysyem ,convert it to 220volt for home use.Is there any guideline for making current & voltage control system for it,energy use monitoring,making solar panel & control circuit from raw parts.I want to make the panel light direction sensitive i.e. mounted panel should change its direction & and angle according to the direction & angle of sunlight.

Kindly help& guide ....etc

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SUPPLY CHAIN ASSET MANAGEMENT AND WAREHOUSE / STOCK GOODS SEARCHING SYSTEM WITH SUPER ACTIVE RFID USING SENSOR NETWORK.

Abstract:
Supply chain event system and asset management and warehouse / stock searching system aim detecting the occurrence of missing or searching of total goods in the warehouse within seconds. The system requires no manual assistance. The all process will do based on the command send from the base unit.
The heart of the system is a base reader unit with multiple access facility. It is connected to a processor and PC ....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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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 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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