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  1. Mind the word-order and compile sentences from the following words:

For example:

A\tube\is\this\vacuum. – This is a vacuum tube.

  1. Different\in\vacuum\doesn’t\diodes\current\flow\directions\in.

  2. What\through\the\flows\tube?

  3. Do\diodes\know\you\that\gas\is\some\a\there\in?

  4. Does\element\current\flow\one\from\to\other\through\a\gas\the?

  5. The\you\describe\a\can\circuit\of\diode?

  6. Cathode\a\the\heater\has?

  7. The\heater\have\another\must\energy\source\of?

  8. Emits\the\when\electrons\heated\cathode.

  9. Diodes\are\used\where?

  10. Diodes\are\rectifiers\of\alternating\voltages\as\detectors\of\radio\signals\

and\as\switching\devices\used.

  1. Negative\on\the\cathode\repel\voltages\electrons\toward\the\the\plate.

  2. Attracts\the\electrons\what?

  3. Tube\in\vacuum\diode\there\is\a\with\a\heater\and\cathode\a\plate\every?

  4. Is\easy\to\the\it\explain\operation\of\semiconductor\devices?

  1. Put questions to the following sentences:

  1. This occurs in vacuum tubes. – Where

  2. A dictionary of electronics defines this science as "the study of conduction of electricity in a vacuum, in gases and in semiconductors". – How

  3. In vacuum diodes, for example, current flows through a vacuum in only one direction. – In what direction …

  4. Current flows from one element to the other through a gas. – Through what …

  5. If a negative voltage is applied to the plate, current does not flow. – When 

  6. Positive voltage on the plate attracts the electrons. – What

  7. When heated the cathode emits electrons. – When

  8. Diodes are used as rectifiers of alternating voltages, as detectors of radio signals and as switching devices. – Are

  1. Form nouns from the following verbs using the suffix –tion and translate them:

For example:

amplify – усиливать (ток); amplification – усиление (тока)

attract – притягивать;

define – определять;

describe – описывать;

direct – направлять;

rectify – выпрямлять (ток).

  1. Guess the meaning of the following adjectives paying attention to the suffix – ic:

atomic, automatic, classic, cubic, economic, dynamic, elastic, harmonic, geometric, kinetic, magnetic, periodic.

  1. Read and translate word-combinations

  1. start from the first component

  1. electronic

anode conduction

ionic

5. vacuum

semiconductor diode

crystal

  1. electric

detector

magnetic circuit (цепь)

anode

cathode

6. molecular

magnetic flow

turbulent

electron

  1. high

ultra-high

perfect vacuum

(совершенный)

working

7. electric

alternating current

direct

  1. electronic

equivalent circuit (схема)

typical

five-electrode

8. positive

negative plate (пластина)

rotor

В. start from the second component

1. electron

energy flow

radiation

2. magnetization

conduction current electrode

3. voltmeter

сontrol сircuit(схема)

(управление)

  1. Match the following sentences with their translations.

  1. The more words you know the better you will translate from English into Russian.

  2. This occurs in vacuum tubes.

  3. A dictionary of electronics defines this science as "the study of conduction of electricity in a vacuum, in gases and in semiconductors".

  4. In vacuum diodes, for example, current flows through a vacuum in only one direction.

  5. Diodes are used as rectifiers of alternating voltages, as detectors of radio signals and as switching devices.

  6. In some diodes there is a gas, and current flows from one ele­ment to the other through a gas.

  7. Current flows through the tube.

  8. If a negative voltage is applied to the plate, current does not flow.

  9. Thus, a diode permits current to flow in only one direction.

  10. Positive voltage on the plate attracts the electrons.

  11. When heated the cathode emits electrons.

  12. Negative voltage on the cathode repels the electrons toward the plate.

  1. Это происходит в вакуумных лампах.

  2. Диоды используются как вы-прямители переменных напря-жений как детекторы радио-сигналов и как переключатели.

  3. Чем больше слов вы будете знать, тем лучше будете переводить с английского языка на русский.

  4. Cловарь по электронике определяет эту науку как «исследование электропроводимости в вакууме, в газах и в полупроводниках».

  5. В вакуумных диодах, например, ток течет через вакуум только в одном направлении.

  6. В некоторых диодах есть газ, и ток проходит от одного элемента к другому через газ.

  7. При нагревании катод испускает электроны.

  8. Отрицательное напряжение на катоде отталкивает электроны по направлению к аноду.

  9. Положительное напряжение на аноде притягивает электроны.

  10. Ток течет через лампу.

  11. Если отрицательное напряжение приложено к аноду, ток не течет.

  12. Таким образом, диод позволяет току течь только в одном направлении.