Development of Semi-Conductors & Pulsed Power Sensors in Russian Federation

The special material for semi-conductors usually has the resistance between the resistance of a conductor and a non-conductor. Variations of temperature or added “impurities” also change the resistance.

The expression “dashes” means the other elements added to the material. Semi-conductors are known as thyristors of type-n and type-t depending on the kind of finished mixture.

The union of type-n and type-t semi-conductors is used to produce diodes and transistors. Now silicon is surely appearing to be the most wide spread material for making semiconductors.

Specially to send the process of electrical current in simply one direction diodes are used. They are produced of semiconductor material. There is a layer of + (positive) construction, - (negative) combination and pn-transfer fixed as barrier level in each diode. Diodes make electrical circuits converting between direct and alternating current. Just a 1/2 of the period or cycle is to be completed due to that diodes make current flow only in one sense. People call such a connection a rectifier.

Concerning the light diodes fixed as LED, they are used to get light at little voltages without generating warmth. Today specialists use LED diodes as the light showing the standby mode of various electronic gadgets.

The growth of thyristors industry was governed by Moore's law. Lithography is the main point of making different power semiconductor devices at lower cost. As optical lithography is today outdated, there's now a tendency for alternate techniques. Conceivably ultraviolet lithography and nano-imprint lithography can become the successors to optical lithography. There are more suitable methods. Like x-ray lithography and electron beam lithography today.

Such a useful thing as pulsed power devices was brought into life in Russia. They apply those sensors to do lots of actions in any conditions. They meet their use in business, manufacture and personal constructions. The igbt modules may be of any properties and form. For example those motion detectors signaling on the light flashes or sometimes radiation measurers.

Alone the current sensor won't be useful. There are lots of ways for applying power system dispatchers. They are needed to control system components like voltage, frequency, power flow, to control the state of circuit breakers in subordinate station and the planned interchange of power with the two power systems. System signals and the actions against them are also in their constant control.

The full snap-shot of the power system must be sent to the controllers from the displays on some computer consoles of several sub-stations. The specialists of the RTU were the pioneers to develop subordinate station level data acquisition such as state of CB's, fuses, isolators and analog values like MW, Hz, Amps and more. Russian Federation and China are now the most active exporters in this sphere.

Add comment October 20th, 2008