How do we define a semiconductor? It’s usually made of materials with special electrical resistance (it is among the resistance of a conductor and a non-conductor). The electrical resistance of semi-conductors also is influenced by variations of temperature or supplementary “impurities”.
The material contains admixtures if some other components have been put to it. Semi-conductors are marked as diodes of type-n and type-t according to the type of complete mixture.
The combination of type-n and type-t semiconductors is used to produce diodes as well as transistors. It’s so that now the most wide spread substance for semiconductor production is silicon.
Just to send the stream of electrical current in just one sense diodes are applied. They are created of semiconductor substance. In every single diode there is a component produced of positive and negative constructions (written as p- and n-) as well as of barrier level (or pn-transfer). Diodes make electrical schemes transforming between direct and alternating current. Just a 1/2 of the period or cycle is to be completed as diodes let current flow just in a single sense. Rectifier is the expression for such a connection.
As for the light diodes fixed as LED, they are used to generate light at small voltages avoiding creating heat. These days specialists use LED light diodes as the light fixing the standby state of various electronic devices.
The development of thyristors production was started by Moore’s law. The most significant side for producing complex power semiconductor gadgets at lower cost is today lithography. Concerning optical lithography, it now leads to the increase of other techniques because it has come to its development limit. Admittedly ultraviolet lithography and nano-imprint lithography will be able to become the successors to optical lithography. There are more suitable methods. For example x-ray lithography and electron beam lithography these days. Another precious invention was carried out in Russia. That happened to be the appearance of current sensors. People apply those sensors to complete lots of actions anywhere. They can be applied in either commercial, manufacture or personal constructions. The voltage sensors can be of different properties and form. Like those motion detectors signaling on the lights or sometimes radiation counters.
It’s still no chance for the current sensors to function alone. There are power system dispatchers made for many control operations. They provide the control of planned power interchange between the adjacent power systems, mode of circuit breakers in dependent station and of system properties like voltage, frequency, power flow. The power systems also can cope with system alarms and find good action for each.
For the controllers to complete these tasks they should get a complete data of the whole power system delivered from the displays of computer consoles in various dependent stations. With the use of respective interfacing matrials the state of CB’s, fuses holders, isolators and analog values such as MVAR, MW, KV, Amps or others was found out in the RTU. The greatest part in export is the prerogative of Russian Federation and China.

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