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Bipolar Junction Transistor:
Transistor construction: the emitter layer is heavily doped, the base is light doped and the collector is only lightly doped. Outer layer has width much greater than those of sand witched p and o type material is150:1.
The term bipolar reflect that the fact that the holes and electrons participate in the junction's process into oppositely polarized material.
P N P
short note on cumulative error
Reverse Recovery Characteristics At the end of forward conduction in diode reverse current flows for a short time. The device doesn't attain its full blocking capabili
demerits of sumpner test
Constant Frequency System In this system chopping period T is kept constant but the on time T om is varied. This system is also referred to pulse with modulation or time
Q. Explain the working of Rectifier Circuits? A simple half-wave rectifier using an ideal diode is shown in Figure(a). The sinusoidal source voltage v S is shown in Figure (b)
what is emitter efficiency
Q. What are concentrators? Elucidate how it helps in connecting number of subscribers. Ans: In rural areas, subscribers are usually dispersed. It is both expensive and unn
Customer Indexing: Customer indexing (CI) is a method for enumerating the total number of consumers in a utility and tagging them to their respective poles, transformers and f
A 6-pole armature has 1000 conductors and a flux per pole of 40mWb. Determine the e.m.f. generated when running at 600 rev/min when (a) lap wound (b) wave wound.
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