LIVE TV

Now Enjoy watching Malayalam and other Television Channels live on your Mobile.. This will works in both 3G and 2G Networks.. and the main Advantage of this service is  This is available for you With out any Monthly rental (Data Charges May apply ) Start enjoying This Service Manorama News Asianet News JaiHind Jeevan Indiavision Asianet Plus Kairali B4U Musiq BBC World Maa Musiq Star Plus Zoom Zoom (High Quality) Discovery...

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Malayalam mp3 Free Download

ABHIMANYU                       1.Ramayanakatte - Abhimanyu                        2.Kandhunjan-Abhimanyu ...

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Antilock brake system

Antilock brake system (ABS) The antilock brake system or the ABS control unit helps to maintain control and directional stability of an automobile in case of extreme braking circumstances. This is achieved by controlling the rotational speed of every wheel by metering the brake line pressure at the time of extreme braking. The system works on most types of road surfaces and decreases the risk of an accident and severity of an impact. Research has shown that an antilock brake system can...

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Smokeless Electronic Cigarette

Smokeless Electronic Cigarette Smokeless electronic cigarette is made up of all people 'smokers who want to but can not smoke in the community non-smoking areas, especially restaurants, cinemas, casinos and some bars. Smokeless cigarettes are supposed to be better than ordinary cigarettes because they do not absorb the emission of dangerous fumes. Smokeless electronic cigarette mean no smelly clothes, no terrible taste in Mouth and no residue in the car. Here is other smokeless electronic...

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Microwaves And Satellite Communication

Microwaves And Satellite Communication Micro is a unit for measuring length. As the name suggests microwaves are the portion of the electromagnetic spectrum where the wavelength is between about one millimeter and thirty centimeters that is micrometers. Frequency of microwave bands extends from about one gigahertz to three hundred gigahertz and are useful for short range, high reliability radio and television links. Systems using microwave frequencies radar, mobile radio, satellite communications,...

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Switched Mode Power Supply

Switched Mode Power Supply (smps) SMPS stands for Switched Mode Power Supply or switching-mode power supply. SMPS is a power supply (PSU) for electronic use, which contains a switching regulator. While a linear regulator maintains the desired output voltage by spreading the excess current in a "pass" power transistor, the SMPS switches a power transistor to rapidly between saturation (full on) and cutoff (completely off) with a variable duty cycle whose average is the desired output voltage....

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PORTABLE HEATER

PORTABLE HEATER In large homes or houses without a heating system, portable stoves useful for keeping small spaces warm. Instead of providing heat to the whole house, homeowner can use a radiator in one room. Not only do these appliances save energy and money, but also spread the warm air more quickly than larger systems. There are many choices of portable heaters. There are a wide variety available and the most expensive is not necessarily the best solution. They come in many different...

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BAGLESS VACUUM CLEANER

BAGLESS VACUUM CLEANER One of the most common problems in maintaining a vacuum cleaner is to ensure that its end is in the best conditions. Often this leads to consumers to replace their vacuum bags more often than not. This is a good reason to make the transition to a bagless vacuum cleaner. It requires less maintenance and is apparently more effective than one requiring a bag. Here is a baglesss vacuum cleaner review a few models from differe Bissell Power Force Bagless Upright Although...

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3D CREATION

3D ON ROAD ...

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ultrasonic motor's steps in engineering

FUTURE ENGINEERING In office equipment such as printers and floppy disk drives, market research indicates that tiny motors smaller than 1 cm3 would be in large demand over the next ten years. However, using the conventional electromagnetic motor structure, it is rather difficult to produce a motor with sufficient energy efficiency. Piezoelectric ultrasonic motors, whose efficiency is insensitive to size, are superior in the mm-size motor area. There is today a large variety designs exploiting...

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MERITS AND DEMERITS OF ULTRASONIC MOTOR

MERITS AND DEMERITS Merits Low speed and high torque - direct drive Quick response, wide velocity range, hard brake and no backlash: excellent controllability; fine position resolution. High power/weight ratio and high efficiency. Quiet drive. Compact size and light weight. Simple structure and easy production process. Negligible effect from external magnetic or radioactive fields, and also no generation of these fields. Demerits Necessity for a high frequency power supply. Less durability due to frictional...

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WORKING PRINCIPLE OF ULTRASONIC MOTOR.

PRINCIPLE OF WORKING The working principle of Ultrasonic motor is shown in figure. High order curling vibration is generated on the surface of the elastic vibrator (stator) and travelling eaves are made by excitation of the piezoceramic vibrator. And the certain pressure causes the slider to propagate on stator by the friction between them. Driving force of Ultrasonic motor is obtained by travelling-wave type elastic curling wave. This type of motor is named as travelling wave type Ultrasonic...

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ROBOTIC HAND DRIVEN BY ULTRASONIC MOTOR

ROBOTIC HAND DRIVEN BY ULTRASONIC MOTOR  Five fingered robot hand driven by 20 ultrasonic motors. Each finger has five degrees of freedom. The size is about the same as that of human hands. As ultrasonic motor has characteristics such as rapid response, large torque and silence, it is adequate for robot hand. Speed of fingers is faster than that of humans. So this hand is adequate for use in master-slave system for remote control in the medical and extreme environment. Now researches...

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PROGRAMMABLE LOGIC CONTROLER

PLC Controlled engineering has evolved over a long period of time. in the Past human were the controlling device for a system. More recently electricity has been used for control and the early control is done by the help of electrical relays. The relays allow the supply can switched ON and OFF electrically without out a mechanical switch. Nowadays relays are common to make simple logical control decisions. The development of low cost computes discovers the most recent control system, Programmable...

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BLOCK DIAGRAM OF PLC

BLOCK DIAGRAM OF PLC SYSTEM             Simplified Block Diagram of a PLC system. It contain main parts: CPU(Central Processing Unit) Input sensing devices Input interfaces Output interfaces Programmer/Monit...

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PLC

LADDER DIAGRAM Ladder Logic language is a PLC programming language, means by which the user communicate information to PLC. Appearance of the Ladder Logic Language designed as a wired relay system, so it termed as a Graphical Programming Language. It is a symbolic set instruction used to create the controller program (representation of contacts and coils are the basic symbols of the ladder diagram). The corrective arrangement of these symbols made possible to create a desired control logic...

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SPEED CONTROL OF MOTOR

SPEED CONTROL OF SERIES MOTOR The automatic speed control of a series motor to a constant is done by automatic adjustment of triggering angle at various loads using feedback signal which is proportional to the actual speed of the motor. The feedback signal can be obtained using tachogenerator or from the back emf produced across the armature. It can be run both DC and AC input, speed control of a universal motor can also possible using this circuit. Capacitor ‘C’ charges through...

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Ultrasonic Motor's Reliability

Reliability of Ultrasonic Motor. In the development of ultrasonic motors, the following themes should be systematically studied: Measuring methods for high-field electromechanical couplings. Materials development (low loss and high vibration velocity). Piezo-actuator designs. (Heat generation mechanism ,Degradation mechanisms,New multilayer actuator designs) USM designs (Displacement magnification mechanisms (horn, hinge-lever),USM types (standing-wave type, propagating-wave type),Frictional contact part.) Drive/control (High frequency/high...

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