My speciality. Овчинникова Т.Е - 36 стр.

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A. By the insertion of what grid is the desirable result accomplished?
B. By the insertion of the third grid, the suppressor, between plate and screen grid.
A. When is the plate current limitation removed?
B. When a fifth electrode is placed within the tube between screen and plate.
A. In what circuits is a pentode used?
B. It is used in the circuits of generation and amplification of high frequency and
low frequency oscillations.
2.12 Part 12
2.12.1 Remember pronunciation of the following words
rectifier, oscillator, half, source, pulsating, eliminate.
2.12.2 Find Russian equivalents to the English words
electron tube последовательно
radio and electron devices полупериодный выпрямитель
rectifier посредством
input current полупериод
half- wave rectifier импульсный ток
by means of входной ток
in series электронная лампа
half cycle радио- и электронные
приборы
pulsating current выпрямитель
2.12.3 Form sentences from these word combinations
Rectifiers are used by means of a filter
Amplifiers are used for amplifying the input current
Pulsations are eliminated is direct current
Oscillators are used half- wave rectifiers
Current passing in one direction for converting a.c.current
into d.c. current
Tubes used as amplifiers are called to produce oscillating waves
2.12.4 Find sentences with verbs in imperative mood (paragraphs 1,2), a
sentence with the infinitive in the function of the adverbial modifier of purpose
2.12.5 Read a questions for each paragraph, find answers in the text
1.What are tubes? 2. What must be used to rectify alternating current into direct
current? 3. What should be applied to put a rectifier into operation?
USE OF ELECTRON TUBES. RECTIFIERS
  A. By the insertion of what grid is the desirable result accomplished?
  B. By the insertion of the third grid, the suppressor, between plate and screen grid.
  A. When is the plate current limitation removed?
  B. When a fifth electrode is placed within the tube between screen and plate.
  A. In what circuits is a pentode used?
  B. It is used in the circuits of generation and amplification of high frequency and
low frequency oscillations.

       2.12 Part 12

       2.12.1 Remember pronunciation of the following words

rectifier, oscillator, half, source, pulsating, eliminate.

       2.12.2 Find Russian equivalents to the English words

electron tube                            последовательно
radio and electron devices               полупериодный выпрямитель
rectifier                                посредством
input current                            полупериод
half- wave rectifier                     импульсный ток
by means of                              входной ток
in series                                электронная лампа
half cycle                               радио- и электронные
                                         приборы
pulsating current                         выпрямитель

       2.12.3 Form sentences from these word combinations

Rectifiers are used                 by means of a filter
Amplifiers are used                 for amplifying the input current
Pulsations are eliminated           is direct current
Oscillators are used                half- wave rectifiers
Current passing in one direction    for converting a.c.current
                                     into d.c. current
Tubes used as amplifiers are called to produce oscillating waves

      2.12.4 Find sentences with verbs in imperative mood (paragraphs 1,2), a
sentence with the infinitive in the function of the adverbial modifier of purpose

       2.12.5 Read a questions for each paragraph, find answers in the text

1.What are tubes? 2. What must be used to rectify alternating current into direct
current? 3. What should be applied to put a rectifier into operation?

                    USE OF ELECTRON TUBES. RECTIFIERS

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