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bipolar junction transistor is known as BJT in short form.they are made by cascading two P-N junction.we can not imagine any electronics circuit without Bjt.they have plenty of applications,one of the most important application is of switch.it can act as a switch.

moreover it can act as a resistor.they can amplify weak signals into strong signals.

in a chip which is used to run a computer or laptop there are millions of transistors cascaded in a chip which has size nearly of fingernail. you can find more information on YouTube

By-Nihar.N.Suryawanshi.

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Q: What is the application of bipolar junction transister?
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What is a schottky transister?

A very high speed bipolar junction transistor having a metal-semiconductor emitter base junction instead of a semiconductor-semiconductor emitter base junction.


A bipolar transister consists of emitter and what else?

Bipolar transister consist of emitter base & collecter


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Why ordinary transistor is known as bipolar junction transistor?

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What is the difference between BJT and NPN transister?

A BJT (bipolar junction transistor) is a general term that includes both NPN and PNP transistors. An NPN transistor has a layer of P-type semiconductor sandwiched between two N-type layers, allowing current to flow from the collector to the emitter when a small current is applied to the base.


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A normal configuration for a BJT is Class A Common Emitter. In this configuration, the BJT operates as an inverting amplifier. Driven into saturation, it is a inverting switch, hence the designation NOT gate.Transistor can act as a gate. But its not a gate. In BJT(Bipolar Junction Transister) type transisters there are two P-N juntions. That means if we need we can use it as a NOT gate. Actually gate ICs (Intergrated circuits) are also build using transistors. (Example : TTL(transister-transister logic))


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