Unit 1 Electronics in the home - Week 2

CONTENTS • Reading for a purpose • Understanding diagrams • Describing block diagrams and circuits • Describing diagrams Understanding diagrams • diagram /'daiəgræm/ • combine /'kɔmbain/ • information /infə'meinʃn/ TASK 6 • approach /ə'proutʃ/ • focus /'foukəs/ • function /'fʌɳkʃn/ TASK 6 • complicated /'kɔmplikeitid/ • basic /'beisik/ • connect /kə'nekt/ • signal /'signl/ • figure /'figə/ TASK 6 • aerial /'eəriəl/ • tuner /'tju:nə/ • detector /di'tektə/ • AF amp = audio frequency amplifier /'ɔ:diəu/ /'fri:kwənsi/ /'æmplifaiə/ • volume /'vɔljum/ • speaker /'spi:kə/ TASK 6 • component /kəm'pounənt/ • require/ri'kwaiə/ • detector /di'tektə/ • separate /'seprit/ TASK 6 • connection /kə'nekʃn/ • value /'vælju:/ • symbol /'simbəl/ TASK 6 TASK 6 • The two types of diagrams shown in the text are called block diagram and circuit diagram. • We call it block diagram TASK 7 • There are 12 circuit symbols in Fig.2. TASK 7 NOTE • resistor /ri'zistə/ • potentiometer /pə,tenʃi'ɔmitə/ • capacitor /kə´pæsitə/ • electrolytic /i'lektrou'litik/ • variable /'veəriəbl/ • inductor /in'dʌktə/ • diode /'daioud/ • bipolar transistor /bai'poulə/ /træn'sistə/ TASK 7 NOTE • consist/kən'sist/ • compose/kəm'pouz/ • comprise/kəm'praiz/ TASK 8 TASK 8 1kΩ →a one kilo ohm resistor 5-65pF→ a five-to-sixty-five picofarad capacitor 47kΩ→ a forty-seven kilo ohm resistor 10μF→ a ten microfarad electrolytic capacitor 5kΩ→ a five-kilo ohm potentiometer 470μH→ a four-hundred-and-seventy- microhenry inductor TASK 8