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How many layers of semiconductive material are required to form a transistor?
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∙ 14y ago
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∙ 14y ago
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What is meaning of npn transistor?
It can be used any where and it is preferred over PNP transistor because mobility of electron is much greater than hole.Some applications of NPN transistorsSwitchingamplification(audio amplifiers)In manufacturing of several ICs(including 741,and TTL(74 series)).
What is transistor and how can it operate and what are its types?
A transistor is a semiconductor device used to amplify & switch electronic signals. The name transistor comes from the 'trans' of transmitter and 'sister' of resistor. Transistors are used in a wide array of electronic equipment, ranging from pocket calculators and radios to industrial robots and communications satellites.There are two types of transistor viz:Primary type transistor-The primary type of transistor in use is known as a bipolar junction transistor, which consists of three layers of semi-conductor material, two of which have extra electrons, and one which has gaps in it. The two with extra electrons (N-Type) sandwich the one with gaps (P-Type). These bipolar transistor are divided into NPN and PNP types. All these primary type of transistor are shielded to protect from light source if it is not shielded from light then the light may be used to open or close the gate, in which case it is referred to as a phototransistor, functioning as a highly-sensitive photodiode.Secondary type transistor-The secondary type of transistor is known as a field-effect transistor, and consists either entire of N-Type semi-conductive material or P-Type semi-conductive material, with the current controlled by the amount of voltage applied to the transistor.General process of Transistor WorkingEach transistor has a store of electrical charge that remains there until it is turned on. In order to turn on a transistor, a small electrical charge needs to enter it via the base. When this happens, the electrical charge opens up the collector, and a more powerful charge leaves through the emitter. Electrical charge is measured in milliamps, and the typical transistor will multiply an electrical charge by one hundred times the number of milliamps it has. The electrical charge that is emitted by a transistor will then flow through a route designated by however the component it is attached to is designed. Complex electronics have many paths that electrical currents need to travel on, and therefore many transistors will be needed in order to constantly supply enough power to work the device.
What does NPN and PNP stand for in transistors?
A transistor is a three-terminal device consisting of 3 layers of semiconductor material. Two of them are one type of semiconductor and the third, a different type. For example, a PNP transistor consists of 2 layers of P-type semiconductor and a layer of N-type semiconductor between them. We can also have the NPN type transistor which has 2 layers of N-type semiconductor and a layer of P-type semiconductor between them. The three terminals are respectively referred to as emitter, base and collector. Transistors are widely used electronic components that perform the function of a switch or an amplifier. The semiconductor material used in transistors is generally silicon, germanium or gallium arsenide. Impurities are added to them in order to create electrically positive (P) or electrically negative (N) behavior. When these layers are joined together the contact potential creates a potential barrier across the PN or NP junction. This potential barrier maintains electrons on the N side and holes on the P side. NPN stands for negative positive negative PNP stands for positive negative positive. GALLIUM ARSENIDE is only used on LEDS manufacturing not transistors ANSWER: NPN negative positive negative SUBSTRATE PNP is opposite of NPN
Working of npn transistor?
N-p-n transistor is made by sandwiching thin layer of p-type semiconductor between two layers of n-type semiconductor. It has three terminals, Emitter, Base and collector. The npn transistor has two supplies, one is connected through the emitter base and one through the collector base. The supply is connected such that emitter-base are forward biased and collector base are reverse biased. It means , Base has to be more positive than the emitter and in turn, the collector must be more positive than the base. The current flow in this type of transistor is carried through movement of electrons. Emitter emits electrons which are pulled my the base as it is more positive. these end up in the collector as it is yet more positive. In this way, current flows in the transistor. Transistor can be used as an amplifier, a switch etc.
What is the difference between monolithic ceramic and mutilayer ceramic capacitors?
Ceramic Multilayer vs Monolithic CapacitorBoth multilayer and monolithic capacitors have multiple layers. The main difference between the two is the manufacturing process. Monolithic capacitors have a paste of ceramic material applied between the conductive layers. After this paste is applied the capacitors are then baked. Multilayer capacitors have the ceramic material sprayed onto the conductive layers. This generally means that monolithic capacitors can't go as high in capacitance because the amount of layers is limited due to their manufacturing process.
What is a transistor composed of?
SILICON or common sand with doping of the right ratio to make a transistor. three layers of semiconductor material
What is the term for an electronic components composed of three layers of a semiconductor material?
Transistor.
Difference between NPN and PNP?
NPN and PNP are transistor types. The difference in the way the layers of semiconductor material are doped with impurities.
How transistor is manufactured?
Transistor is manufactured by Sandwitching an N type semiconductor into two layers of P type or P type into two N type and each layers connection has taken out for applying voltages.
How many sandwiched layers of semiconductors make up a transistor?
The construction of a BJT is very simple - it is three alternating layers of semiconductor.
What is meaning of npn transistor?
It can be used any where and it is preferred over PNP transistor because mobility of electron is much greater than hole.Some applications of NPN transistorsSwitchingamplification(audio amplifiers)In manufacturing of several ICs(including 741,and TTL(74 series)).
How many layers of material does a cow's cornea have?
7-8 layers
The Earth has 3 main layers when the divisions are based on?
The chemistry of the material in the layers.
Why transistor have 4 wire?
The transistor is a three layer (or two junction) device, emitter, base, and collector (or other designations for variations such as FET's). Each layer is connected to a terminal. Three layers - three terminals.
What are inorganic soil layers?
inorganic soil layers are layers of broken down rock that have become soil without the organic material (such as: leaves, grass, decomposed life forms) . The Bedrock and Parts of the Parent Material are inorganic soil layers.
What are layers of material hardend by intense weight?
diamontrrcy
3 Layers of soil?
TopsoilSubsoilBedrock/Parent Material
