《电子信息专业英语》电子教案课件.ppt
电子信息专业英语工业和信息产业“十二五”规划教材,主编 高立新,电子工业出版社,1,Chapter 4 Electronic Instrument&Measurement,2,教学目标通过万用表、示波器和信号发生器、音频信号放大器测试三篇文章学习电子仪器设备与测量。万用表：掌握万用表用途、数字万用表和模拟万用表、万用表表笔和万用表档位、用万用表表测量电阻、电压、电流。示波器和信号发生器：掌握示波器功能、示波器显示波形、示波器面板及设置、示波器输入连接、信号发生器功能、信号发生器面板及设置、信号发生器输出连接。音频信号放大器测试：掌握用面包板搭建电路、麦克风及放大电路、运算放大器及放大电路、用万用表及示波器等仪表测量音频信号放大器的电压及波形。,4.Chapter 4 Electronic Instrument&Measurement 电子仪器设备与测量,Chapter 4 Electronic Instrument&Measurement,3,4.1.Lesson 10 Multimeter 万用表,New Words and Technical Terms,Chapter 4 Electronic Instrument&Measurement,4,4.1.Lesson 10 Multimeter 万用表,Figures in the Text,Figure 4-1 Analog multimeter Figure 4-2 Digital multimeter,Chapter 4 Electronic Instrument&Measurement,5,4.1.Lesson 10 Multimeter 万用表,Figures in the Text,Figure 4-3 Measure voltage Figure 4-4 Measure voltage in a light sensor circuit,Chapter 4 Electronic Instrument&Measurement,6,4.1.Lesson 10 Multimeter 万用表,Figures in the Text,Figure 4-5 Measure light sensor resistance Figure 4-6 Measure current,Chapter 4 Electronic Instrument&Measurement,7,4.1.Lesson 10 Multimeter 万用表,Notes to the Text1 A multimeter is an electronic measuring instrument that combines voltage,current and resistance measurement functions in one unit：that引导定语从句，修饰instrument。句子可以翻译为：万用表是一种将电压、电流、电阻测量功能结合在一个单元中的电子测量仪器。2 Analog multimeters have a needle moving along a scale：moving along现在分词短语作状语，表示needle的行为。模拟万用表有一个指针沿着刻度盘移动。3 The central knob has fewer positions and all you need to do is to switch it to the quantity you want to measure：all you need to do主语从句。you want to measure定语从句修饰quantity。句子可以翻译为：中央旋钮有几个位置，所有你需要做的是，切换旋钮到你想要测量值）的位置。4 The four resistors are connected in series：四个电阻串联连接。5 The multimeter is connected in parallel between the two points where the measurement is to be made：where the measurement is to be made从句修饰the two points。句子可以翻译为：万用表并行连接到要测量的两点之间。6 What happens to the output voltage of the light sensor circuit when you cover the light sensor with your hand：What引导疑问句。句子可以翻译为：当你用手盖住光传感器时，对于光传感器电路的输出电压会发生什么？,Chapter 4 Electronic Instrument&Measurement,8,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,New Words and Technical Terms,Chapter 4 Electronic Instrument&Measurement,9,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,Figures in the Text,Figure 4-7 Panel of an oscilloscope,Chapter 4 Electronic Instrument&Measurement,10,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,Figures in the Text,Figure 4-8 V/t graph Figure 4-9 Apply a signal to the input terminal,Chapter 4 Electronic Instrument&Measurement,11,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,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,Chapter 4 Electronic Instrument&Measurement,12,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,Figures in the Text,Figure 4-13 Panel of a function generator Figure 4-14 Function generator and oscilloscope,Chapter 4 Electronic Instrument&Measurement,13,4.2.Lesson 11 Oscilloscope and Function Generator 示波器和信号发生器,Notes to the Text1 to check that each block is operating as expected and is correctly linked to the next：to check与to monitor并列，作为is补足语。that引导名词从句。句子可以翻译为：确认每一模块如预期一样工作，正确地连接到下一个（模块）。2 a graph of voltage against time：一个电压对应时间的图形。3 Apply a signal to the input terminal：施加一个信号到输入端。4 The TIME/DIV control determines the horizontal scale of the graph which appears on the oscilloscope screen：这个“时间/格”控制（旋钮）决定出现在示波器屏幕图形的水平刻度。5 where they are used as a signal source to test a circuit：where引导状语从句。句子可以翻译为：在那里，它们（信号发生器）被用作信号源来测试电路。6 By clicking,selecting and setting,the generator outputs a 1kHz sine waveform：动名词短语作状语，主语generator，谓语output。句子可以翻译为：通过点击频率范围1 k按钮，选择一个正弦波信号，设置衰减开关为0分贝，信号发生器输出1千赫兹正弦波形。,Chapter 4 Electronic Instrument&Measurement,14,4.3.Lesson 12 Audio Amplifier Testing 音频信号放大器测试,New Words and Technical Terms,Chapter 4 Electronic Instrument&Measurement,15,4.3.Lesson 12 Audio Amplifier Testing 音频信号放大器测试,Figures in the Text,Figure 4-15 Microphone Figure 4-16 Microphone circuit,Figure 4-17 Measure the voltage Figure 4-18 Check output waveform,Chapter 4 Electronic Instrument&Measurement,16,4.3.Lesson 12 Audio Amplifier Testing 音频信号放大器测试,Figures in the Text,Figure 4-19 741 op-amp Figure 4-20 Package of 741,Figure 4-21 Audio amplifier circuit Figure 4-22 Circuit on the breadboard,Chapter 4 Electronic Instrument&Measurement,17,4.3.Lesson 12 Audio Amplifier Testing 音频信号放大器测试,Notes to the Text1 intended to develop your circuit design skills：作为整个句子的状语（补足语），说明目的。句子可以翻译为：为了发展你电路设计技能。2 giving you experience of using the oscilloscope to monitor signals in a circuit：并列作为整个句子的状语（补足语），说明目的。句子可以翻译为：给你使用示波器在电路中监控信号的经验。3 you need to provide a voltage across it using a voltage divider circuit：您需要使用分压电路提供给它两端的电压。4 Adjust the setting properly until the shape of the signals is clear.：适当地调整设置，直到信号的形状变清楚。5 The way in which this particular op-amp circuit works allows you to choose the voltage gain according to the formula：in which引导定语从句，修饰The way。句子可以翻译为：这个特殊的运算放大器电路工作方式，让你根据公式选择的电压增益。6 Do your observations using the oscilloscope confirm the above theoretical analysis？：你使用示波器观察到的结果证实了上述理论分析吗？,Chapter 4 Electronic Instrument&Measurement,18,在科技英语中经常使用的语法结构相当多，有非谓语动词、从句、被动语态、长句、祈使句（说明书、手册中），it句型等。英语每个简单句中，只能用一个谓语动词，如果读到几个动作，就必须选出主要动作当谓语，而将其余动作用非谓语动词形式，才能符合英语语法要求。非谓语动词（不能作谓语用）包括动词不定式、分词和动名词。4.4.1.动词不定式4.4.2.分词4.4.3.动名词,4.4.Grammar 科技英语语法及非谓语动词,Chapter 4 Electronic Instrument&Measurement,19,Quiz（Translate into Chinese）,
