ĐIỆN tử VIỄN THÔNG nhóm 7 khotailieu

Group Nguyễn Bá Duy Trần Minh Đức Vũ Văn Chinh Nguyễn Khắc Ngân Đỗ Văn Sang Dương Văn Hùng Task 1: List of electronic in the house _ washing machine√ _rice cooker _television√ _CD player _cell phone _radio√ _microwave oven√ _water heater√ _fridge _speaker _air conditional _fan machine _computer _headphones _record players√ _tape recorders√ _dishwashers√ _heating systems√ _digital alarm clocks√ Task 2: IC : integrated circuits… mạch tích hợp CD: compact disc …… đĩa quang học Hi-fi : high fidelity … độ trung thực cao Task 3: Tick in task Task 4: Date Invention Early 20th century Vacuum tube application in the home Radios, televisons, record player, tape recorders 1947 Transistor 1958 IC, micropocessors Automatic washing machines future Hi-fi units and portable radios Multimedia entertainment systems, Computer controlled robots TASK5: ELECTRONICS MAY BE USED IN THE HOME IN THE FUTURE ROBOTS DOING HOUSEWORK BRUSHING MACHINES TV CONTROLLED BY THOUGHT FACE RECOGNITION SYSTEM FLY CAR ROBOT DOCTOR Task 6: 1_ Circuit diagram and block diagram 2_Systems approach to electronics Task 7: C : capacitor R: resistor P: potentiometer D: diode IC: integrated circuits Q: transitor A: aerial E: ground LS: speaker L: inductors Task 8: R2 one kilohm resistor C1 five to sixty five picofarads capacitor R3 fourty seven kilohms resistor C3 ten microfarads capacitor P1 five kilohms potentiometer L1 four hundered and seventy microhenries Task 9: 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 sixtyfive 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 Fig.3 shows the block diagram of an amplitude-modulate (AM) radio transmitter It consists of a radio frequence (RF) oscillator, a modulator , an audio frequency (AF) amplifier ,and RF power amplifier The RF oscillator generates an RF carrier 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 AF signals to modulate the RF carrier wave The power of the modulated carrier wave is increase by the RF power amplifier.The strong modulated output signals are fed to the aerial which enables them to be transmitted over long distances  ... century Vacuum tube application in the home Radios, televisons, record player, tape recorders 19 47 Transistor 1958 IC, micropocessors Automatic washing machines future Hi-fi units and portable... ROBOT DOCTOR Task 6: 1_ Circuit diagram and block diagram 2_Systems approach to electronics Task 7: C : capacitor R: resistor P: potentiometer D: diode IC: integrated circuits Q: transitor A: aerial