Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
Smart Electronics new - 2.doc
Скачиваний:
12
Добавлен:
09.11.2019
Размер:
2.45 Mб
Скачать
  1. Write a sentence with if/when … for each situation.

  1. We can’t pretend to the best mark on our subject without the knowledge on P-type and N-type semiconductors.

If we have knowledge on P-type and N-type semiconductors we will pretend to the best mark on our subject.

  1. I don’t make an impurity semiconductor, because I have no necessary equipment. If/when …, I… .

  2. I am not a member of the scientific group of the Semiconductor Development Department, so my name is not mentioned in the diploma. My name …, if/when I … .

  3. I have always wanted to be a famous actor, and I’m not interested in conferences in physics.

If I …, my attention … .

  1. My father works at the plant developing new types of semiconductor devices, and he is going to represent some of his equipment at a technical exhibition.

If my father … , he …

  1. Answer the questions in the way shown.

  1. Will you add some arsenic to silicon?

No. (deactivate thermal agitation). If I add some arsenic to silicon, I will deactivate thermal agitation.

  1. Let’s start our discussion from P-type semiconductors.

I can’t agree. (not completely studied valence electrons). If we …

  1. Could we help you to prepare for the conference?

No. (not be the only developer of the new aspects of P-type semiconductors usage). If you …

  1. Are you ready to explain to us your new theory on different types of conductivity?

I hope so. (be the breakthrough in science). If I …

  1. Why do you want to work in Silicon Valley?

(improve semiconductor systems).

  1. Will we discuss about the P-N junction?

Of course. (you understand the principles of a PNP transistor operation). If we …

  1. Use your own ideas to complete the sentences.

  1. If we apply the thermal agitation to silicon, it will result in changing the conductivity of the specimen.

  2. If an impurity atom has more valence electrons than the material, …

  3. If holes are majority charge carriers in the material, …

  4. If an semiconductor device has two P-N junctions, …

  5. If an electron is attached to the nucleus very loosely, …

  6. If you want to become a head of the Semiconductor Development Institute, …

  1. Form verbs from the following words using the suffix – en and translate them: strength, broad, wide, tight, rough.

For example: hard – твёрдый, крепкий; harden – …

  1. Translate the following international words without a dictionary. These words are often used in electronics.

Line (n), magnetic, parameter, mechanism, parallel (adj), method, procedure, normal (adj), technique (n), interval, typical, radiation, component, dielectric (adj), static.

  1. Read and translate word-combinations starting from the first component.

electronic

final

gaseous state

neutral

quantum

equivalent

central

horizontal state

mechanical

moving

resonance

high

extra-high frequency

low

radio

superhigh

additional

differential

dynamic resistance

negative

pneumatic

surface

  1. Match the following sentences with their translations.

1. If we add a small amount of arsenic to silicon, several valence electrons of each arsenic atom will form covalent bonds with the neighboring atoms of silicon.

A. Рекомбинация происходит когда дырки и электроны иногда встречаются в полупроводнике.

2. The atom of arsenic has five valence electrons. The fifth electron has no pair and is attached to the arsenic nucleus very loosely.

B. Каждый атом галлия из III группы вводит одну дырку в кристаллическую решётку.

3. Each atom of arsenic will add one negative charge carrier to the silicon crystal. Such an impurity is called donor impurity. The resulting semiconductor will be called an N-type semiconductor.

C. Если мы добавим небольшое количество мышьяка в кремний, несколько валентных электронов каждого атома мышьяка создадут (образуют) ковалентные связи с соседними атомами кремния.

4.If the holes are in the minority in a semiconductor, we’ll call them minority charge carriers.

D. Тип примеси с галлием называется акцепторной примесью, и получающийся в результате полупроводник известен как полупроводник P-типа.

5. Recombination takes place when holes and electrons sometimes meet in the semiconductor.

E. Эта дырка может двигаться в кристалле таким же образом, как и дырка, полученная в результате теплового возбуждения.

6. Each atom of gallium from group III introduces one hole into the crystal lattice of silicon.

F. Если дырки в меньшинстве в полупроводнике, мы будем называть их неосновными носителями заряда.

7. This hole is able to move about in the crystal in the same way as a hole produced by thermal agitation.

G. Атом мышьяка имеет пять валентных электронов. Пятый электрон не имеет пары, он очень слабо связан с ядром атома мышьяка.

8. The type of impurity with gallium is called an acceptor impurity and the resulting semiconductor is known as a P-type semiconductor.

H. Каждый атом мышьяка добавит один отрицательно заряженный носитель в кристалл кремния. Такая примесь называется донорной примесью. Получившийся в результате полупроводник будет называться полупроводником N-типе.

Соседние файлы в предмете [НЕСОРТИРОВАННОЕ]