Who invented the transistor? strong> Transistor is a semiconductor electronic device that is semiconducting material, which can bring electrical vibrations to the circuit, raise the electric current, and is capable of detection and modulation.
The first samples of the point contact are obtained by placing two very close ends on the surface of a germanium crystal. This primitive model with little strength and decisiveness left its surface contact transistor, which is preferred by the whole world. The bulk and weight of these transistors, where some models are smaller than a match head, are very small. A low potential difference of 1.5 volts is sufficient for operation. Energy is high. However, a large part of the feeding power in the tubes is used to heat the cathode tubes. Since the transistors still present as power amplifiers do not generate heat, they do not suffer from the most cumbersome mounting. A tube works only when a certain warm-up period has passed. The transistor works at the moment when the voltage is applied.
However, the tubes do not work efficiently after 2000 hours. Theoretically, the life of transistors is endless.
Semiconducting transistors are three-fold active electronic circuit elements. Active here means not only a power-hungry but also a winner. The semiconducting materials are of two types: (N) type, (P) type, (N) type semiconducting electron excess, which act as current carriers in the semiconductor. (P) type semiconductors, there is an electron deficiency and these are called “cavities”. (P) -type semiconductor current-carrying cavities.
Transistors are used as current control elements. According to structures, transistors are two types. PNP and NPN transistors. They are obtained by placing a different semiconductor in the middle of two semiconductors of the same type. This semiconductor in the center is very intricate and acts as a current control element.
There are three outputs (feet) of transistor base, emitter and collector. Reverse voltage is applied between the base-emitter and the voltage (polar) emitter-collector. These tensions are applied to the following events in the transistor.
Neutral isolates the region and prevents the electrons and the cavities from becoming fully assembled. At the same time, the same phenomenon occurs at the junction surface between the collector and base. The correct polymorphic region applied between the emitter and base is narrowed. That is, the negatively charged base of the wells of the basal battery, which is connected to the base, also emits electrons in the emitter to the junction surface. After a certain tension, the neutrality rises from the center of the region and begins to flow electrons from N to P The positive of the battery attracts these electrons while the negative one emits electrons. Thus an electron flow from the emitter to the base occurs. The positive voltage applied to the collector attracts the electrons in the collector. Furthermore, a large majority of electrons passing through the neutral region between the emitter and the base-emitter reach the junction surface between the collector and base. (Because the base is a few microns thick and very few of the electrons can be merged into the cavities.)
Electrons from the emitter through the pulling force of the collector and the impulse of the emitter penetrate the neutral region and provide a flow of electrons from the emitter to the collector.
If Baza is subjected to a negative voltage (positive for the PNP transistor), the collector becomes imperfect between the emitter and the emitter. (The leakage currents introduced by foreign materials in P and N type materials are very small and can be transformed into normal electron flow.) The current directions of the PNP type transistor and the polarity of the battery are reversed.
Transistors are divided into two according to their construction techniques: a) a) Alloy transistors, b) Diffusion transistors, c) Mesa transistors, d) Alloy transistors, b) Diffused transistors, b) Diffused transistors, H3>
a) Low frequency transistors, b) High frequency transistors, c) Power transistors.
c) Coupler covalently coupled transistors.
The biggest advantage of transistors is that they can be made very small, heat loss is low, mechanical shock and
are resistant to bumps.
Recently, transistors have been built up to 10 kilowatts in power. Transistors are most often used as amplifiers and increase the electrical value of sound, picture and so on in the small value applied to their inputs to the desired level.
The industry is using a wide variety of circuits to turn on and off motors and speed tuning.
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