《電子信息專業(yè)英語》電子教案ppt課件(19頁PPT)

1、 電子信息專業(yè)英語工業(yè)和信息產(chǎn)業(yè) “十二五”規(guī)劃教材 主編 高立新電子工業(yè)出版社1第1頁，共19頁。Chapter 4 Electronic Instrument & Measurement 2教學(xué)目標(biāo)通過萬用表、示波器和信號發(fā)生器、音頻信號放大器測試三篇文章學(xué)習(xí)電子儀器設(shè)備與測量。萬用表：掌握萬用表用途、數(shù)字萬用表和模擬萬用表、萬用表表筆和萬用表檔位、用萬用表表測量電阻、電壓、電流。示波器和信號發(fā)生器：掌握示波器功能、示波器顯示波形、示波器面板及設(shè)置、示波器輸入連接、信號發(fā)生器功能、信號發(fā)生器面板及設(shè)置、信號發(fā)生器輸出連接。音頻信號放大器測試：掌握用面包板搭建電路、麥克風(fēng)及放大電路、運算放大

2、器及放大電路、用萬用表及示波器等儀表測量音頻信號放大器的電壓及波形。4.Chapter 4 Electronic Instrument & Measurement 電子儀器設(shè)備與測量第2頁，共19頁。Chapter 4 Electronic Instrument & Measurement 34.1.Lesson 10 Multimeter 萬用表adjustvt. 校準(zhǔn)；調(diào)整，使適合readingn.讀數(shù)；讀物；閱讀leadn. 引線；鉛； vt. 領(lǐng)導(dǎo)；引導(dǎo)socketn. 插座； vt. 給配插座breadboardn. 面包板；電路試驗板breakvt. 打破；中斷；n. 休息sens

3、orn. 傳感器illuminationn. 照明；照度；啟發(fā)covern. 蓋子；封面； vt. 覆蓋New Words and Technical Termsmultimetern. 萬用表metern. 儀表；米； v. 用表計量measuringn. 測量adj. 測量用的needlen. 針；指針； vt. 用針縫scalen. 刻度；天平；規(guī)模liquid crystal display液晶顯示autorange自動量程proben. 探針；調(diào)查； v. 探測 knobn. 把手第3頁，共19頁。Chapter 4 Electronic Instrument & Measureme

4、nt 44.1.Lesson 10 Multimeter 萬用表Figures in the Text Figure 4-1 Analog multimeter Figure 4-2 Digital multimeter第4頁，共19頁。Chapter 4 Electronic Instrument & Measurement 54.1.Lesson 10 Multimeter 萬用表Figures in the Text Figure 4-3 Measure voltage Figure 4-4 Measure voltage in a light sensor circuit第5頁，共19

5、頁。Chapter 4 Electronic Instrument & Measurement 64.1.Lesson 10 Multimeter 萬用表Figures in the TextFigure 4-5 Measure light sensor resistance Figure 4-6 Measure current第6頁，共19頁。Chapter 4 Electronic Instrument & Measurement 74.1.Lesson 10 Multimeter 萬用表Notes to the Text1 A multimeter is an electronic me

6、asuring instrument that combines voltage, current and resistance measurement functions in one unit：that引導(dǎo)定語從句，修飾instrument。句子可以翻譯為：萬用表是一種將電壓、電流、電阻測量功能結(jié)合在一個單元中的電子測量儀器。2 Analog multimeters have a needle moving along a scale：moving along現(xiàn)在分詞短語作狀語，表示needle的行為。模擬萬用表有一個指針沿著刻度盤移動。3 The central knob has few

7、er positions and all you need to do is to switch it to the quantity you want to measure：all you need to do主語從句。you want to measure定語從句修飾quantity。句子可以翻譯為：中央旋鈕有幾個位置，所有你需要做的是，切換旋鈕到你想要測量值）的位置。4 The four resistors are connected in series：四個電阻串聯(lián)連接。5 The multimeter is connected in parallel between the two

8、points where the measurement is to be made：where the measurement is to be made從句修飾the two points。句子可以翻譯為：萬用表并行連接到要測量的兩點之間。6 What happens to the output voltage of the light sensor circuit when you cover the light sensor with your hand：What引導(dǎo)疑問句。句子可以翻譯為：當(dāng)你用手蓋住光傳感器時，對于光傳感器電路的輸出電壓會發(fā)生什么？第7頁，共19頁。Chapter

9、4 Electronic Instrument & Measurement 84.2.Lesson 11 Oscilloscope and Function Generator 示波器和信號發(fā)生器amplituden. 振幅；廣闊；充足peak-peak峰峰值 ；正負(fù)峰間隔值tracen. 蹤跡，痕跡；v. 追蹤function generator信號（函數(shù)）發(fā)生器waveformn. 波形sinen. 正弦squaren. 正方形；平方；廣場triangularadj. 三角形的attenuatorn. 衰減器New Words and Technical Termsoscilloscope

10、n. 示波器investigatev. 調(diào)查；研究paneln. 儀表板；座談小組graphn. 圖表；曲線圖；vt. 用圖表示verticaladj. 垂直的；n. 垂直線axisn. 軸；軸線horizontaladj. 水平的；地平線的；n. 水平intensityn. 亮度；強度；緊張focusn. 焦點；焦距； v. 使聚焦spotn. 斑點；地點； vt. 用燈光照射第8頁，共19頁。Chapter 4 Electronic Instrument & Measurement 94.2.Lesson 11 Oscilloscope and Function Generator 示波器

11、和信號發(fā)生器Figures in the TextFigure 4-7 Panel of an oscilloscope第9頁，共19頁。Chapter 4 Electronic Instrument & Measurement 104.2.Lesson 11 Oscilloscope and Function Generator 示波器和信號發(fā)生器Figures in the Text Figure 4-8 V/t graph Figure 4-9 Apply a signal to the input terminal 第10頁，共19頁。Chapter 4 Electronic Inst

12、rument & Measurement 114.2.Lesson 11 Oscilloscope and Function Generator 示波器和信號發(fā)生器Figures in the Text Figure 4-11 The trace of a signal on the screen Figure 4-12 Voltage amplitude and time period Figure 4-10 Control button on an oscilloscope 第11頁，共19頁。Chapter 4 Electronic Instrument & Measurement 12

13、4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信號發(fā)生器Figures in the TextFigure 4-13 Panel of a function generator Figure 4-14 Function generator and oscilloscope 第12頁，共19頁。Chapter 4 Electronic Instrument & Measurement 134.2.Lesson 11 Oscilloscope and Function Generator 示波器和信號發(fā)生器Notes to the Te

14、xt1 to check that each block is operating as expected and is correctly linked to the next：to check與to monitor并列，作為is補足語。that引導(dǎo)名詞從句。句子可以翻譯為：確認(rèn)每一模塊如預(yù)期一樣工作，正確地連接到下一個（模塊）。2 a graph of voltage against time：一個電壓對應(yīng)時間的圖形。3 Apply a signal to the input terminal：施加一個信號到輸入端。4 The TIME/DIV control determines the

15、 horizontal scale of the graph which appears on the oscilloscope screen：這個“時間/格”控制（旋鈕）決定出現(xiàn)在示波器屏幕圖形的水平刻度。5 where they are used as a signal source to test a circuit：where引導(dǎo)狀語從句。句子可以翻譯為：在那里，它們（信號發(fā)生器）被用作信號源來測試電路。6 By clicking , selecting and setting, the generator outputs a 1kHz sine waveform：動名詞短語作狀語，主

16、語generator，謂語output。句子可以翻譯為：通過點擊頻率范圍1 k按鈕，選擇一個正弦波信號，設(shè)置衰減開關(guān)為0分貝，信號發(fā)生器輸出1千赫茲正弦波形。第13頁，共19頁。Chapter 4 Electronic Instrument & Measurement 144.3.Lesson 12 Audio Amplifier Testing 音頻信號放大器測試New Words and Technical Termsmicrophonen. 麥克風(fēng)，擴音器audio signal音頻信號voltage divider分壓器minus sign負(fù)號，減號upside down上端朝下；顛倒

17、invertvt. 使反轉(zhuǎn)；使顛倒 observationn. 觀察theoreticaladj. 理論的analysisn. 分析；分解第14頁，共19頁。Chapter 4 Electronic Instrument & Measurement 154.3.Lesson 12 Audio Amplifier Testing 音頻信號放大器測試Figures in the Text Figure 4-15 Microphone Figure 4-16 Microphone circuit Figure 4-17 Measure the voltage Figure 4-18 Check ou

18、tput waveform 第15頁，共19頁。Chapter 4 Electronic Instrument & Measurement 164.3.Lesson 12 Audio Amplifier Testing 音頻信號放大器測試Figures in the TextFigure 4-19 741 op-amp Figure 4-20 Package of 741Figure 4-21 Audio amplifier circuit Figure 4-22 Circuit on the breadboard第16頁，共19頁。Chapter 4 Electronic Instrumen

19、t & Measurement 174.3.Lesson 12 Audio Amplifier Testing 音頻信號放大器測試Notes to the Text1 intended to develop your circuit design skills：作為整個句子的狀語（補足語），說明目的。句子可以翻譯為：為了發(fā)展你電路設(shè)計技能。2 giving you experience of using the oscilloscope to monitor signals in a circuit：并列作為整個句子的狀語（補足語），說明目的。句子可以翻譯為：給你使用示波器在電路中監(jiān)控信號的經(jīng)

20、驗。3 you need to provide a voltage across it using a voltage divider circuit：您需要使用分壓電路提供給它兩端的電壓。4 Adjust the setting properly until the shape of the signals is clear.：適當(dāng)?shù)卣{(diào)整設(shè)置，直到信號的形狀變清楚。5 The way in which this particular op-amp circuit works allows you to choose the voltage gain according to the formula：in which引導(dǎo)定語從句，修飾The way。句子可以翻譯為：這個特殊的運算放大器電路工作方式，讓你根據(jù)公式選擇的電壓增益。6 Do your observations using the oscilloscope confirm the above theoretical analysis？：你使用示波器觀察到的結(jié)果證實了上述理論分析嗎？第17頁，共19頁。Chapter 4 Elec