Radio transmitter

Тема 1.5. РАДИОПЕРЕДАТЧИК (RADIO TRANSMITTER)

1. Отработка новой лексики. Особенности перевода интернациональных слов.

2. Словообразование.

3. Чтение.

4. Говорение. Работа с устными высказываниями по теме.

Отработка новой лексики. Особенности перевода интернациональных слов.

ЗАДАНИЯ

1.1. Найдите транскрипцию приведённых ниже слов в англо-русском словаре. Произнесите слова в соответствии с транскрипцией (см. Приложение1). Прослушайте слова (см. Введение.п. 2). (Find a transcription of the following words in the English-Russian dictionary. Say the words according to the transcription (see Application1). Listen to the words (see Introduction. item2.)

to apply – прилагать, применять

to occupy – занимать, захватывать

to retain – удерживать, сохранять

vice versa - лат. наоборот

application of modern techniques - применение современных методов

applicable theory – применимая теория

applied sciences – прикладные науки

occupational problems – профессиональные задачи

insulating tape - изоляционная лента

case - случай

in case of - в случае

important - важный, значительный

importance - важность, значительность

kind - род, вид, разряд

picture – изображение, картина

to transfer – перемещать, переносить

to wind (wound) – наматывать

winding - обмотка

as follows – следующее

any – любой (зд.)

except - за исключением

main line - главная линия

wire winding - обмотка провода

wire wound on a core - провод, обмотанный на сердечник

various forms of energy except kinetic - различные формы энергии за исключением кинетической

pictures of any kind - изображения любого рода

1.2. Найдите в тексте «RADIO TRANSMITTER» указанные в задании 1.1. слова. Запишите слова в контексте (см. Введение. п.1). (Find words pointed in the task 1.1. in the text «RADIO TRANSMITTER». Write down the words in a context (see Introduction. item1.)

RADIO TRANSMITTER

Radio communication is the transfer of high-frequency energy from the transmitter to the receiver. Accordingly, the main components of radio com­munication of any kind are a transmitter and a receiver.

The function of a transmitter is to generate electrical oscillations at radio frequency which is called the carrier frequency. The main components of a transmitter are an oscillator, amplifiers, and a transducer.

Their functions are as follows. The oscillator of a transmitter converts electric power into oscillations of definite radio frequency.

As for amplifiers, they increase the intensity of oscillations produced by the oscillator and retain the definite frequency. The transducer converts the information to be transmitted into a varying electrical voltage. In case of sound transmission a microphone serves as a transducer. And in case of pic­ture transmission a photoelectric device serves as the transducer.

Other important components of radio transmitters are the modulator and the aerial. As for the modulators, they use proportional voltages for con­trolling the variations of oscillation intensity. And the aerial is that part of a radio system from which energy is transmitted into or received from the space (or the atmosphere).

The aerial must be insulated from the ground and may occupy vertical or horizontal position. In case the transmitter aerial occupies vertical position, the receiver aerial must be also vertical and vice versa. It applies to all radio frequencies except short waves. In usual amplitude-modulated broadcasting the receiver aerial may consist of a wire wound on a core.

1.3. Прочитайте приведенные ниже слова. Обратите внимание на особенности перевода интернациональных слов (см. Введение. п.3.). Попытайтесь перевести слова без словаря. Запишите перевод этих слов, сверяясь со словарём. (Read the following words. Pay attention to the translation of international words (see Introduction. item3). Try to translate these words without a dictionary. Write down the translation of these words, referring to the dictionary.)

horizon_______________________

horizontal_____________________

position ______________________

proportion____________________

theory_______________________

transducer____________________

1.4. Переведите приведенные ниже словосочетания и предложения в письменной форме. (Translate the following word combinations and sentences in writing.)

properties of oscillations retainable in any position________________________________________

devices of any kind except faulty ones__________________________________________________

winding of any kind_________________________________________________________________

the instruction ran as follows__________________________________________________________

The intensity of oscillations is of great importance in any case._______________________________

What are the most important properties of polythene as insulating material?_____________________

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