UNIT 1: ELECTRONICS IN THE HOME Group - Students : NGUYỄN TÀI TÙNG TÔ NAM ANH LÊ THANH TÙNG NGUYỄN ĐỨC QUANG Bùi Anh Khang Nguyễn Hồng Quân Phạm Văn Huy • Task : Desk phone………….điện thoại bàn Speakers…………… loa Fan-machine ……… quạt máy Headphones ……… tay nghe Computer…………… máy tính Electronic timer …… đếm điện tử Electric cooker …… nồi cơm điện Mobile phone ……….điện thoại di động • Task : Find out the meaning of these abbreviations You can use Appendix on page 188 to help you 1, IC : intergraded circuits – mạch tích hợp 2, CD : Compact dics – đĩa quang học 3, Hi-fi : High fidelity – độ trung thực cao • Task : Full in the gaps in this table with the help of the text Date Invention Early 20th century Vacuum tube • 1947 Transistor 1958 microelectronics Future robot Application in the home Radio,TV, record players hi-fi units, portable radios Automatic washing-machines computer controlled robots Task 5: Use the space below to make a list of ways in which you think electronics may be used in the home in the future • electronics may be used in the home in the future Electronic devices invented since then until now extremely important to humans and always evolving every day as television smarter,robots smarter in the future robots will replace humans.Smart home will help us live comfortably,safer and environmentally friendly,robots will help us clean the house and talked with us.And much more interesting,humans are gradually improving the quality of life • Task 6: 1, a block diagram and circuit diagram 2, systems approach to electronics Task 8: 1: R2 (1K) A one kilohm resistor 2: C1 (5-65 pF) A five-to-sixty-five-picofarad capacito 3: R3 (47K) A Forty-seven kilohm resistor 4: C3 (10 uF) a ten-microfarad electrolytic capacitor 5: P1 (5K) a five-kilohm potentiometer (POT) 6: L1 (470u uF) a four-hunder-and- seventy-mircrofarad electrolytic capacitor • Task 9: Fill in the gaps in this description of the tuned circuit shown in Fig.2 Each gap represents one word The circuit consists of a four hundred and seventy microhenry inductor which is connected in parallel with a variable capacitor The capacitor can be varied between five and sixty-five picofarad The aerial is connected to the top end of the tuner It is also connected to the positive terminal of the diode in the detector The bottom end of the tuner is connected to earth via the zero voltage supply rail • Task 11: Writing Describing diagrams With the help of the diagrams, fill in the gaps in the description on page 12 Each gap represents one word The description should answer these questions Shows the block diagrams of an amplitude-modulated (AM) radio transmitter It is consists of a radio frequency (RF) oscillator, a modulator, an audio frequency (AF amplifier, and an RF power amplifier The RF oscillator generates an RFcarrier wave which is fed into the modulator The microphone converts sounds into audio frequency signals which are amplified by the AF amplifier The modulator then uses the amplified AFsignals to modulator the RF carrier wave The power of the modulated carrier wave is increase by the RF poweramplifier.The strong modulated output signals are fed to the aerial which enables them to be transmitted over long distances Vocabulary : Vacuum tube: ống hút chân không Invention: phát minh Low-powered: mức lượng thấp Microelectronic: vi điện tử integrated circuits: mạch tích hợp great increase: gia tăng introduction: giới thiệu microprocessor: vi xử lí provide: cung cấp diagram: giản đồ complicated: phức tạp common basic unit : đơn vị chung function: hàm số block diagram: sơ đồ khối aerial: không component: thành phần approach: phương pháp tiếp cận separate: riêng biệt amplifier: khuếch đại circuit: mạch capacitor: tụ điện terminal: thiết bị đầu cuối zero voltage supply rail: đường sắt cung cấp điện áp không ... kilohm resistor 2: C1 (5- 65 pF) A five-to-sixty-five-picofarad capacito 3: R3 (47K) A Forty-seven kilohm resistor 4: C3 (10 uF) a ten-microfarad electrolytic capacitor 5: P1 (5K) a five-kilohm potentiometer... Transistor 1 958 microelectronics Future robot Application in the home Radio,TV, record players hi-fi units, portable radios Automatic washing-machines computer controlled robots Task 5: Use the... tube: ống hút chân không Invention: phát minh Low-powered: mức lượng thấp Microelectronic: vi điện tử integrated circuits: mạch tích hợp great increase: gia tăng introduction: giới thiệu microprocessor: