Transformers: Introduction
Michael Faraday was the principle of electromagnetic induction in 1831. It indicates that a voltage will appear in an electrical coil when the flux linked with the same changes. The size of the induced voltage is proportional to the amount of Change feed links. This discovery is the basis for many magneto electric machines. The earliest use of this phenomenon was the development of the induction coils. These coils were used to detonate the explosive charges high-voltage pulses generated in the mines. As Direct-current power system had been in use at that time only a few transformer principle use. In the DC system of the plant and loading center must necessarily close to each other, because the requirement of the transfer of economic power. And DC generators can not be scaled up due to limitations of the collector. This the world has other effective methods of producing electricity in bulk and transparent -- Zion. In the second half of the 19th Century, generators, transformers and induction Machines were invented. These machines work on the supply alternating current. The role of Processors have come to light. Transformer, which consisted of two circuits connected by a common magnetic circuit, the current and voltage has to be helped to keep last invariant power. The effectiveness of such a conversion is extremely high. Thus one could Select a moderate voltage for generating an alternating voltage power, high voltage sion of this power over long distances and then use a low voltage to safe operating the end user. All this is made possible by the processors. AC power systems and is well established.

Electrical Machines I:
Processor can connect two or more circuits. In its simple form with two electric Circuits may by a magnetic circuit, an electric coil will be connected is used to create a time varying magnetic filed. The second coil, which is carried out in order to link this area has a voltage induced in the same. The magnitude of the emf is induced which is determined by the number used in each coil. Thus, the voltage can be increased or by changing the number of laps. The field winding is used as primary and the output winding is a secondary consideration. When a magnetic medium is the link between primary and secondary windings, there is no conductive connection between the two circuits. The processor thus provides a galvanic isolation between the two circuits. Frequency Both sides will be the same. There is no change in the nature of power is re-sulting machine as a "processor" and not a "converter". Electrical power to a voltage / current level is only transformed "into electrical energy with the same frequency with a different voltage / current level. Although most large transformers in electrical systems may find the use of transformers is not limited to systems of power. Through the principle of transformers is universal. Transformers can be found in the frequency range of a few hertz to several megahertz. Power ratings range from a few milliwatts to several hundred megawatts. Extending the use of transformers is so broad that it is virtually impossible to think of a great power without a transformer. The demand for electricity doubles every ten years in developing countries. Any capacity MVA transformers installed production rises above 7MVA.