Lesson-12-Oscilloscope-电子技术专业英语教程[冯新宇主编][电子教案]课件.ppt

Lesson 12 Oscilloscope电子技术专业英语教程冯新宇 主编电子工业出版社电子工业出版社 Unit5 Electronic Instruments4/10/20231电子技术专业英语教程Lesson 12 OscilloscopeBackgroundsText tour Language in useVocabulary Structure Reading/writing techniques4/10/20232电子技术专业英语教程Terminology vertical axis纵轴two-dimensional二维的cathode-ray(阴极发射出的)高速电子measured quantity测定量Backgrounds4/10/20233电子技术专业英语教程Terminology simultaneous observation同步观察time relationship时间关系flipflop触发器；触发电路，双稳态多谐振荡器logic state逻辑状态Backgrounds4/10/20234电子技术专业英语教程Text tour Outline The concept of oscilloscopesThe prototypical oscilloscopesExamples of oscilloscopes test The basic principles of oscilloscopesApplications 4/10/20236电子技术专业英语教程The concept of oscilloscopesThe word“oscilloscope”has evolved to describe any of a variety of electronic instruments used to observe,measure,or record transient physical phenomena and present the results in graphic form.Perhaps the popularity and usefulness of the oscilloscope spring from its exploitation of the relationship between vision and understanding.4/10/20237电子技术专业英语教程The concept of oscilloscopesprobeCRT4/10/20238电子技术专业英语教程Examples of oscilloscopes test The time delay from clock to output of a D type logic flipflop can be measured(Right).This type of flipflop copies the logic state on the input D to the output Q when the clock has a state change from low to high.The lower trace shows the flipflop clock,while the upper trace shows the resulting state change propagating to the Q output.The difference in the horizontal position of the two positive transitions indicates the time elapsed between the two events.A time-interval measurement using a two-channel oscilloscope 4/10/202310电子技术专业英语教程The basic principles of oscilloscopesA voltage varies with the passage of time An oscilloscope is ordinarily used to characterize the way a voltage varies with the passage of time.Therefore,any time-varying quantity which can be converted into a voltage also can be measured.TransducersThe transducers useful in oscilloscope applications are those which convert energy into an electric voltage.Electric current probe An electric current probe,although just a special form of a transformer,is an example of a transducer designed specifically for use with an oscilloscope.The current to be sensed is linked though a magnetic core,and a voltage proportional to the input current is developed across the multiturn secondary winding and transmitted to the oscilloscope input for display.4/10/202311电子技术专业英语教程Vocabulary evolve,transient,illuminate,function StructureReading/writing techniquesLanguage in use4/10/202313电子技术专业英语教程evolve in dictionaryvi.进展,进化,展开evolve as(逐渐)成为 evolve from 从.进化而来 evolve into 发展进化成 vt.使发展,使推断出,使进化4/10/202315电子技术专业英语教程evolve in textThe word“oscilloscope”has evolved to describe any of a variety of electronic instruments used to observe,measure,or record transient physical phenomena and present the results in graphic form.“示波器”这个词已经发展发展成为描述任何一种用于观察、测量或记录瞬态物理现象和以图形方式表示结果的电子仪器。4/10/202316电子技术专业英语教程transient in textOscilloscopes are probably most often used for direct measurement of the transient voltage signals occurring within equipment that directly depends on electricity for its operation,such as computers,automation controls,telephones,radios,television,power supplies,and many others.示波器大概是最常用于直接测量瞬态瞬态电压信号的设备，这些信号产生于运转直接依靠电流的设备，如计算机、自动控制仪器、电话、收音机、电视、电源和其他设备。4/10/202318电子技术专业英语教程transient in use transient noise 瞬态噪声transient oscillation【电】暂态振荡transient wave【计】瞬变流,瞬时波4/10/202319电子技术专业英语教程illuminate in dictionaryvt.照明,照亮,阐明,说明,使灿烂,以灯火装饰(街道等)vi.照亮4/10/202320电子技术专业英语教程illuminate in textUsually the graph appears as an illuminated trace on the screen of a cathode-ray tube(CRT)and is used to construct a useful model or representation of how the instantaneous magnitude of some quantity varies during a particular time interval.通常在阴极射线管（CRT）屏幕上图形以明明亮的亮的痕迹显示，这个图形可以用来构建一个有用的模型或者表示在特定扫描时间内一些量的瞬态值如何变化。4/10/202321电子技术专业英语教程function in dictionaryn.官能,功能,作用,职责,典礼,仪式,数函数vi.(器官等)活动,运行,行使职责4/10/202322电子技术专业英语教程function in use weighting function【计】加权函数 function element功能器件;功能元件reciprocal function 倒数函数;互反函数 4/10/202324电子技术专业英语教程Structure4/10/202325电子技术专业英语教程Reading/Writing techniques4/10/202326电子技术专业英语教程