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Hello everyone, in this lesson we will learn the composition of triode

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If you want to learn triode well, you must first understand the composition of triode

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Transistors, like diodes, are composed of P-type semiconductors and N-type semiconductors.

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P-type semiconductor we call it P-region

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N-type semiconductor we call it N-region

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The diode consists of two regions, one is the P region and the other is the N region

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By analogy, the triode consists of three regions

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According to the arrangement, it can be divided into PNP arrangement and NPN arrangement

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These two arrangements form two different triodes

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Transistors arranged in PNP order are called PNP transistors

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Transistors arranged in NPN order are called NPN triodes

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Most of the transistors used in the circuit are NPN type transistors

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At the same time, each of the three areas of the triode leads to a pin, as shown in the right figure

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The pins drawn from the areas on both sides of the triode are C pole and E pole

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The pin drawn from the middle area of the triode is the B pole