to get information about the topic phototransistor related topic refer the page link bellow

http://seminarsprojects.net/Thread-phototransistor-a-leap-of-optoelectronics ....etc

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In a Pelton Turbine or Pelton Wheel water jets impact on the blades of the turbine making the wheel rotate, producing torque and power. Learn more about design, analysis, working principle and applications of Pelton Wheel Turbine.

Hydraulic Turbines are being used from very ancient times to harness the energy stored in flowing streams, rivers and lakes. The oldest and the simplest form of a Hydraulic Turbine was the Waterwheel used for grinding grains. Different types of Hydraulic Turbines were developed with the increasing need for power. T ....etc

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electronic letter box working and construction

The circuit which is explained below is been employed as an Electronic Letter Box. When letter drop by someone into the letter box then the LED attached at the output stops blinking which indicates that there is a letter in your letter box. To identify the presence of a letter in the box we have connected a LDR as well as source of light. LDR is a special kind of resistor whose action based on the intensity of light declining on it. In the time of total darkness LDR resistance is approx 1 mega ohm ....etc

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earthquake resistant construction of r c c building and construction practices seminar pdf

Earthquake-resistant structures are structures designed to withstand earthquakes. While no structure can be entirely immune to damage from earthquakes, the goal of earthquake-resistant construction is to erect structures that fare better during seismic activity than their conventional counterparts.

According to building codes, earthquake-resistant structures are intended to withstand the largest earthquake of a certain probability that is likely to occu ....etc

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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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construction and working of foot operated air pump mechanism com

Abstract

After the introduction of tubeless tires frequent the instances of flat tires on the roads have reduced by a considerable extent. Most smaller punctures leading to slow air loss are now detected at morning with deflated or low air pressure in tires.Tubeless tire repair facility is still not available at all the places in our country. Most roadside puncture repair shops in smaller towns damage the tires at the time of fixing punctures. I travel frequently and at times i ....etc

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to get information about the topic earthquake resistant techniques full report ,ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-advanced-earthquake-resistant-design
....etc

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PHOTOTRANSISTOR A LEAP OF OPTOELECTRONICS

Like diodes, all transistors are light-sensitive. Phototransistors are designed specifically to take advantage of this fact .the most-common variant is an NPN bipolar transistor with an exposed base region. Here, light striking the base Replaces what would ordinarily be voltage applied to the base so, a photo- transistor amplifies variations in the light striking it. Phototransistors may or may not have a base lead . (if they do, the base lead allows us to bias the phototransistor's lig ....etc

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sir, i want to get working of cupola and its construction and its reaction involves in each zone.in pdf ....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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