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What is a semi-conductor? It’s mainly produced of materials with certain electrical resistance (it is among that of a conductor and a non-conductor). The electrical resistance of semiconductors also is influenced by changes in temperature or supplementary dashes.

The word “impurities” stands for the other components mixed to the material. The final mixture defines the semi-conductors as semiconductor assembly of type-n and type-t.

Diodes as well as transistors are manufactured of the 2 variants of semi-conductors. These days silicon is apparently becoming the most actual material for making semiconductors.

Diode then is the electronic component created of semi-conductor material. It makes electrical current pass only in a single direction. There is a piece of + (positive) construction, - (negative) construction and pn-transfer fixed as barrier level in every diode. Electrical circuits that transform among alternating and direct current are made using diodes. Because that diodes make current stay only in one sense only a part of the period or cycle is fulfilled. Rectifier is the term for such a combination.

LED (or light diodes) is one more variant of diodes. Such diodes are used when it’s a task to generate light at low voltages and parallel generate no warmth. These days developers have LED diodes as the light fixing the idle mode of all kinds of electronic equipment.

The development of thyristors production was started by Moore’s law. Lithography is the most important factor of making complicated power semi-conductor equipment at smaller price. Concerning optical lithography, it now leads to the popularization of alternate techniques as it has reached its development limit. These days ultraviolet lithography and nano-imprint lithography are thought to stay the most suitable alternatives to optical method. One can find more suitable methods. For example x-ray lithography and electron beam lithography today.

In Russia igbt modules were first created. People need those sensors to do different tasks anywhere. The igbt modules meet their application in commercial, manufacture and personal devices. The voltage sensors may be of any properties and shape. For example those motion detectors signing on the light flashes or sometimes radiation counters.

Alone the current sensor won’t function. There are power system programmes responsible for many control actions. They maintain the check of planned power interchange between the adjacent power systems, mode of circuit breakers in substation and of system parameters like voltage, frequency, power flow. The power systems also help deal with system alarms and find suitable action for any of them.

The dispatchers work well in all these cases if they are supplied with a detailed snap-shot of the power system. The data is got from several computers in different sub-stations. The scientists of the RTU were the first to create sub-station level data acquisition such as status of CB’s, fuses holders, isolators and analog values like MVAR, Hz, etc. Russia and China are today the biggest exporters in this field.