construction and working of impatt diode pdf

Abstract

In many respects, the IMPATT diode structure is very similar to that of many other forms of diode, and in particular the standard PN junction diode or the Schottky diode.However the differences in its construction and fabrication mean that it is able to operate in its avalanche mode whether the transit time provides the negative resistance.
There is a variety of structures that are used for the IMPATT diode. All are variations of a basic PN junction and usually there is an intrinsic layer, ....etc

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My name is maxwell braokubo,a final year electrical/electritronic engineering student of the university of port harcourt, Nigeria. I am presently working on a project titled design and construction of a temperature controlled fan. Please i would like you to give me the required materials i will need to complete my work.i will be glad if my request is granted. Thanks ....etc

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CEILING FAN OBJECTIVE : To study the working, construction And troubleshooting of Ceiling Fan
2. INTRODUCTION A ceiling fan is a device suspended from the ceiling of a room, which employs hub- mounted rotating paddles to circulate air. First electrically powered fan was invented in 1882 by Philip Diehl. Crompton Greaves Ltd is the leading manufacturer of fans.
3. PRINCIPLE If a current carrying conductor is placed in a magnetic field it experience a force and start to rotate. The direction of rotation can be found by Fleming s Left Hand R ....etc

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electric iron box working principle with electric

The electric iron is one of the most important, extremely popular and widely used domestic electric appliance. The electric iron is based on the heating effect of electric current. Find out more about the invention of the electric iron and how it works.

Introduction
There are various electrical inventions used for domestic purposes such as the electric fire, electric iron, and electric water heater that all depend on one common principle; when a current is passed through a piece of wire, the w ....etc

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This type of gear box is similar to the constant mesh type in that all the gears on the main shaft are in constant mesh with the corresponding gears on the lay shaft. The gears on the lay shaft are fixed to it while those on the main shaft are free to rotate on the same. Its working is also similar to the constant mesh type, but in the former there is one definite improvement over the latter. This is the provision of synchromesh device which avoids the necessity of double declutching. The parts which ultimately are to be engaged are first broug ....etc

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construction and working of four quadrant chopper pdf

Abstract

In chopper circuits, unidirectional power semiconductors are used. If these semiconductor devices are arranged appropriately, a chopper can work in any of the four quadrants. we can classify chopper circuits according to their working in any of these four quadrants as type A, type B, type C, type D and type E. Let us now take a look of these classifications and the characteristics of various classifications.

Type A Chopper or First Quadrant Chopper

This type of chopper is s ....etc

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Working and construction of electric fan

An electric fan is an electric motor to which the blats are fixed so that then the motor of the fan rotates ,the balds through the air A D.C fan are of DC series motor in which the rotating part armature is connected in series with the stationary part and when the current is given to the motor , the magnetic field is set up in the field winding which experience a force in the armature to move it at right angle to the feed and balds attached with shaft of armature displaced the air. the same principle ....etc

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The Solex company was founded by Marcel Mennesson and Maurice Goudard to manufacture vehicle radiators. These were fitted to several makes of early cars including Delaunay-Belleville and buses of the Paris General Omnibus company.

After World War I, the radiator business went into decline and the company bought the rights to the carburetor patents of Jouffret and Ren e and named them Solex after their business.

The Solex brand is now owned by Magneti Marelli. The original Solex company changed its name in 1994 to Magneti Marelli France a ....etc

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i need the working of an electric iron and its componets assosiated eit it for a project purpose.. kindly make it that available.. ....etc

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Energy meters are the basic part to measure the power consumption. It is used everywhere, no matter how big or small consumption it is. It is also known as watt-hour meter. Here we discuss the construction and working principle of induction type energy meter.To understand the structure of watt-hour meter, we must understand the four essential components of the meter. These components are as follows:

Driving system

Moving system

Braking system

Registering system

Driving System

The components of this system are two silicon steel ....etc

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