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Transistors are switches made by manipulating material properties The material in a transistor is normally insulating: In order to make it semi-conducting they are ...

Question

Transistors are switches made by manipulating material properties The material in a transistor is normally insulating: In order to make it semi-conducting they are changed bydepletiondamping performance with holesdriving out extra electronsdoping the insulator with different atoms

transistors are switches made by manipulating material properties The material in a transistor is normally insulating: In order to make it semi-conducting they are changed by depletion damping performance with holes driving out extra electrons doping the insulator with different atoms



Answers

A power transistor is a solid-state electronic device. Assume that energy entering the device at the rate of 1.50 $\mathrm{W}$ by electrical transmission causes the internal energy of the device to increase. The surface area of the transistor is so small that it tends to overheat. To prevent overheating, the transistor is attached to a larger metal heat sink with fins. The temperature of the heat sink remains constant at $35.0^{\circ} \mathrm{C}$ under steady-state conditions. The transistor is electrically insulated from the heat sink by a rectangular sheet of mica measuring 8.25 $\mathrm{mm}$ by $6.25 \mathrm{mm},$ and 0.0852 $\mathrm{mm}$ thick. The thermal conductivity of mica is equal to $0.0753 \mathrm{W} / \mathrm{m} \cdot^{\circ} \mathrm{C} .$ What is the operating temperature of the transistor?

Hello students in this question, we have given that mp And transistors are preferred. Transistors are put effort preferred over the over the P N. P tan Esther and we have to determine why. So we know that in the N P N transistor these electrons flow. Okay. And in the PNP transistor these holes flow initially and these electrons flow. And we know that the mobility, the mobility is higher. Higher four electrons than polls holes. So hence we can say that the N P N transistor will be able to flow the charge careers very easily. Okay, very easily. So it means the efficiency of the N P N transistor. Mhm. Mhm N P N transistor will be higher than this PNP transistors. So that's why I M P and canisters are preferred over the PNP transistor. Okay, so from the given options option D. Is the correct answer for the problem. Okay, thank you.

The difference between the transistor and diabetes, The very simple actually over there that age in that dialogue, Uh, that would have only one day, I would have only that would have only one p in Jackson, P and Jackson. Well, and the transistor have to pee and Jackson, either it s p np or NP, and Okay, so that is the major difference between the diarrhea and the when things is for their diet. And this is for the transistor. That's okay.

So transistor is composed off thin layers of semi conducting material either made of silicon germanium. Or nowadays it can be made from any other compound, which acts that semiconductor on in transistor. Particularly, there are three layers semiconductor, which is called emitter, a base on dhe collector, so it can be either N, p, n, a, p and p transistor, as you can see here and here and means that it end means that it is doped with phosphors or arsenic. So it's a mixture of silicon, plus fours for us or silicon, plus acidic and P means that it can be mixture of silicon plus border on there can be other doping, says Well, so this is the primary example of that. So this is transistor for you. It can be in p n, o. P, M. P. As needed in application. Now, transistor here can act as amplifier. The switch. It can do so by controlling the flow of electrons from based emitter and base to collector. So when you apply some particular signal between emitter on the base, let's say it's the audio signal on you. Collect the output between base and collector, which is again audio signal, but it will have higher amplitude. So if this is a very low amplitude signals, this will be very high. Amplitude signal. That's how it works as an amplifier, on the other hand, to make it work as a switch, there is a current flowing from base, So this is a sort of a collector to emitter, and there is a current applied to base. So a small current which controls the base can control the current flowing from collector to emitter or emitter to collector. Uh, bye. So it can be controlled with the small current applied to the base. So that's how it can work as a switch. Thank you.

So increasing temperature in medals reduces the number of free electrons because of greater separation in between atoms, which needs to degrees in condo T v t. Okay, so this happens. But otherwise, mhm eating a semiconductor. This declaration of atoms then reduce good DVD oh one victim's overlap. Oh and in goodies though I know the gap between balance and conduction band, but still because of the thermal energy that is being supplied, more electrons move conduction band, causing when you produce yeah, conductivity.


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