Base Spreading Resistance

Base Spreading Resistance: With two depletion layers penetrating the base, the base holes are confined to the thin region of P-type semiconductor illustrated in Fig. 10.12. The resistance of this thin region (or section) is called the base spreading resistance rbb′. With the increase in reverse bias VCB on the collector diode, the width of the P-section …

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Important Points Regarding Working of Transistors

Important Points Regarding Working of Transistors: The noteworthy points regarding working of transistors are summarized below. 1. Current conduction in N-P-N transistor is by electrons and the conventional current flow will be in the opposite direction. Current conduction in P-N-P transistor is by holes but in external leads, the current conduction will be by flow …

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What is Transistor Biasing? – Types of Biasing

What is Transistor Biasing? – Types of Biasing As already mentioned, for normal operation of a transistor emitter-base junction is always forward biased and collector-base junction is always reverse biased. For a moment if the Transistor Biasing of emitter-base junction is ignored and only collector-base junction, which is reverse biased [Fig. 10.6 (a)] is considered, …

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Transistor Construction

Transistor Construction: The transistor construction consists of a silicon or germanium (preferably silicon because of its smaller cutoff current ICBO, smaller variations in ICBO due to variations in temperature and higher operating temperature) crystal in which a layer of N-type material is sandwiched between two layers of P-type material, as shown in Fig. 10.1 (a). Alternatively …

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