Abstract
Organic electronics, (plastic electronics or polymer electronics), deals with conductive polymers, plastics, or small molecules. It is called 'organic' electronics because the polymers and small molecules are carbon-based, like the molecules of living things. This is as opposed to traditional electronics (or metal electronics) which relies on inorganic conductors such as copper or silicon. Polymer electronics are laminar electronics
applications
negative differential resistance(switches)
melanins. Historically, melanin is anoth ....etc

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difference between chopper fed drives and converter fed drives pdf

If the source of supply is d.c. (for example in a battery vehicle or a rapid transit system) a chopper-type converter is usually employed. The basic operation of a single-switch chopper was discussed in topic 2, where it was shown that the average output voltage could be varied by periodically switching the battery voltage on and of for varying intervals. The principal difference between the thyristor-controlled rectifier and the chopper is that in the former the motor current ....etc

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I need some ppts regarding special electrical drives like about SRM, BLDC, Stepper motors, Synchronous reluctance motors.. Pls i need it quickly ....etc

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Electrical Drives of Machine Tools
Introduction
The arrangement of the motor nearby the operative member and also the use of variable-speed electric motors make it possible to simplify mechanical transmissions as well as the construction of the machine.
This helps to improve machine-tool design and considerably reduce the physical force required to handle the machine.
Introduction
One or more electric motors driving the operative members of the machine tool make up the machine's essential components.
T ....etc

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Simona Coman1, V. Comnac1, Member IEE, Cr. Boldisor1, D.C. Dumitrache2
1Automation Department, Transilvania University of Brasov, 5 M.Viteazu Str.,
500174 Brasov, Romania, phone/fax: +40 0268 418836,
2 Department of Automatic Control, Technical University of Cluj-Napoca,
26-28 Gh. Baritiu Str., 400027 Cluj-Napoca, Romania



Abstract

The distributed control systems with communication
networks are used in many industrial applications. These systems
are often referred as Networked Control Syste ....etc

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CHAIN DRIVES IN LOW TORQUE DRIVES AND REDUCING PULSATIONS
INTRODUCTION TO DRIVES

Mechanical components used for power transmission. It may be belt, chain or gear depending on engine design parameters like - Distance between crankshaft and camshaft, engine maximum speed, engine-torque and engine construction cost. - Power transmission is done from one shaft to another shaft which may or may not rotate at same speed.

CHAIN DRIVES ....etc

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Power hacksaws are used to cut large sizes (sections) of metals such as steel. Cutting diameters of more than 10/15mm is very hard work with a normal hand held hacksaw. Therefore power hacksaws have been developed to carry out the difficult and time consuming work.The metal to be cut is held in a machine vice which is an integral part of the base. Turning the handle tightens or loosens the vice. The vice is very powerful and locks the metal in position.When cutting is taking place, the metal and especially the blade heats up quickly. Coolant sh ....etc

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