What is a semiconductor? It's usually made of materials with an appointed resistance (it is between the resistance of a conductor and a non-conductor). Changes in temperature or the part of dashes also influence the electrical resistance.
The word “dashes” means the other elements mixed to the material. The complete mixture labels the semiconductors as semiconductor assembly of type-n and type-t.
Diodes and transistors are made of these 2 variants of semiconductors. It's known that these days the most wide spread substance for semi-conductor creation is silicon.
Semiconductor material is necessary to get diodes which serve for letting the stream of electrical current only in one direction. In every single diode there is a component produced of positive and negative constructions (written as p- and n-) as well as of so-called barrier level (or pn-transfer). Diodes create electrical schemes converting among direct and alternating electrical current. As diodes let current stay just in one direction only a part of the period or cycle is completed. Specialists call such a combination a rectifier.
LED (light diodes) is a different type of diodes. They are used when it's important to produce light at little voltages and eventually generate no heat. Today they have LED light diodes as the light showing the idle mode of different electronic devices.
Moore's law led to the popularization of thyristors industry. Lithography is the most significant side of producing different power semiconductor gadgets at smaller cost. For optical lithography is already outdated, there's now a tendency for alternate technologies. Now ultraviolet lithography and nano-imprint lithography are supposed to be the most promising substitutes to optical method. X-ray lithography and electron beam lithography now are also known to be of high potential.
In Russia voltage sensors were invented. Sensors are needed in many devices for various purposes. The voltage sensors find their use in commercial, industrial and personal applications. The shape and value of the sensor can change according to the type of equipment. And the sensors may be small (like in several light detectors) or complex (detectors that react on radiation changes).
It's still impossible for the voltage sensors to work alone. There are lots of destinations for applying power system dispatchers. They are useful to control system components like voltage, frequency, power flow, to observe the state of circuit breakers in substation and the planned interchange of power with the two power systems. System alarms and the acts against them are also under their accurate control.
For the dispatchers to fulfil these functions they have to get a full information of the whole power system received with the monitors of computers in various dependent stations. The status of CB's, fuses, analog values and isolators or other types of sub-station level data acquisition was first found out in the RTU. Russia and China are today the most active exporters in this sphere.