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Advanced English for Industrial Engineering Unit 3. Electronics _______________________________________________________________________________________________________________________ 2c. EXERCISE: Rewrite the following sentences, using the word(s) given: UNIT 3 :ELECTRONICS 1. The development in electronics grew exponentially after the advent of radio and transistor technology. (to lead). THE ADVENT OF RADIO AND TRANSISTOR TECHNOLOGIES LED TO AN EXPONENTIAL GROWTH IN/OF THE DEVELOPMENT OF ELECTRONICS 2a. COMPREHENSION QUESTIONS True or False. Rewrite the FALSE statements so they are TRUE. 1. Linear circuits are improved by using non-linear devices. T 2. Digital circuits use only digital effects. False. They are constructed from digital circuits among others 3. Heat dissipation lengthens the life of appliances. True 4. Noise is any type of disturbance caused by a circuit. False . Noise is an unwanted signal. 2. Outputs are actuators or other devices that transform current or voltage signals back into useful physical form. Outputs are actuators or other devices TRANSFORMING CURRENT … (SHORTENED RELATIVE CLAUSE) 3. Components are generally in mutual electromechanical contact, usually by being soldered to a printed circuit board (PCB). By SOLDERING COMPONENTS TO A PRINTED CIRCUIT BOARD, THEY ARE IN MUTUAL ELECTROMECHANICAL CONTACT 2b. LANGUAGE IN USE 1) Find in the text different expressions to introduce examples. for instance, for example, e.g., such as, like 2) Give a synonym for the noun “advent” advance 3) Explain what an antenna is. Can you find a synonym for it? aerial 4) Give another example of an electronic device with the three types of components and explain briefly how it works. 5) Give a complete definition of electronic circuit. 6) “Controlling”, “processing” (in paragraph 1) and “cooling” (in paragraph 9) are verb forms used as what type of word? Can you give more examples similar to these ones? nouns 7) Mention any materials that you know which can be used for soldering components tin (Sn), silver (Ag) 8) Can you guess the meaning of “discrete levels” from the text? Not analog 9) Define mixed-circuit with your own words a circuit comprising both analog and digital devices 10) What is noise? Any undesired type of wave (acoustic, electrical, radio frequencies…) 4. Components packaged either singly or in more or less complex groups are known as integrated circuits (ICs). ICs is the name GIVEN TO COMPONENTS… BY WHICH COMPONENTS PACKAGED EITHER SINGLY OR IN MORE OR LESS COMPLEX GROUPS ARE KNOWN. 5. Most analog electronic appliances are constructed from combinations of a few types of basic circuits. Most analog electronic appliances ARE MADE UP OF COMBINATIONS OF A FEW TYPES OF CIRCUITS…….. (make up) 6. Analog devices normally use a continuous range of voltage as opposed to the discrete levels used in digital circuits. Contrarily to THE DISCRETE LEVELS USED IN DIGITAL CIRCUITS, ANALOG DEVICES NORMALLY USE A CONTINUOUS RANGE OF VOLTAGE 3. GRAMMAR AND FUNCTIONS Rhetorical Functions in Academic Writing: DESCRIBING POSITION 3a. EXERCISES: Complete this description with the words below TRANSFORMERS The name transformers is derived from the fact that when two coils are placed in close inductive proximity to one another the lines of force from one cut across the turns of the other inducing an ac current, energy is transformed from one winding to another and this is called transformer action. There are a great variety of transformers for a variety of applications including power transformers, audio transformers and rf transformers among others. All work on the above principle. 5a. Match the words 1–8 with a word a–h that has a similar meaning. 1g: scarcity-shortage; 5b:measure-degree; 2a: selection-choice; 6d: outside-external; 3e: to intensify-to heighten; 7h: practically-virtually; 4f:lacking-missing; 8c:removable-detachable. 5b. Complete the text with the words below. power electronics semiconductor thyristors switches power devices transistors Power Semiconductor Devices The modern age of POWER ELECTRONICS began with the introduction of THYRISTORS in the late 1950s. Now there are several types of POWER DEVICES available for high-power and high-frequency applications. 1 Advanced English for Industrial Engineering Unit 3. Electronics _______________________________________________________________________________________________________________________ The most notable power devices are gate turnoff thyristors (GTOs), power Darlington TRANSISTORS, power MOSFETs (metal-oxide silicon field-effect transistors), and insulated gate bipolar transistors (IGBTs). Power SEMICONDUCTOR devices are the most important functional elements in all power conversion applications. The power devices are mainly used as SWITCHES to convert power from one form to another. 2