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1、We will continue to improve the companys internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of ev
2、aluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication zero resistan
3、ce. To constantly perfect ERP, and BFS+, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to
4、perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS+, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure zero. To strengthen
5、ing Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medic
6、al, control career against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of
7、zero risk. To strengthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to imple
8、mentation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. To further standardize
9、trading, and strive to achieve according to law, standardize and fair. Innovation of performance management, to ensure that potential employees zero fly. To strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance ma
10、nagement. To further quantify and refine employee standards . Work, full play party, and branch, and members in five type Enterprise construction in the of core role, and fighting fortress role and pioneer model role; to continues to strengthening four good leadership constructionWe will continue to
11、 improve the companys internal control system, and steady improvement in ability to manage and control, optimize business processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying
12、with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication zero resistance. To constantly p
13、erfect ERP, and BFS+, and PI, and MIS, and SCM, information system based construction, full integration information system, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run m
14、aintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS+, and ERP, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure zero. To strengthening Humanities care
15、, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helped trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career
16、against; continues to implementation psychological warning prevention system, training employees health of character, and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of zero risk. To stren
17、gthened business plans management, will business business plans cover to all level, ensure the business can control in control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-own
18、ed assets method, further specification business financial management; to perfect risk tube control system, achieved risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. To further standardize trading, and strive
19、 to achieve according to law, standardize and fair. Innovation of performance management, to ensure that potential employees zero fly. To strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To furthe
20、r quantify and refine employee standards . Work, full play party, and branch, and members in five type Enterprise construction in the of core role, and fighting fortress role and pioneer model role; to continues to strengthening four good leadership construction广西工学院鹿山学院模拟电子线路实验指导书利用设在基坑边的固定泵输送砼到施工面
21、,人工摊铺,平板振捣器振捣密实,用刮杠沿模板顶将砼刮平,并用木抹搓平压实,确保砼密实和表面平整。砼浇注时埋设支立模板及钢筋支架所需预埋铁件play levels cadres in enterprise development in the of backbone backbone role; to full strengthening members youth work, full play youth employees in company development in the of force role; to improve independent Commission again
22、st corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further strengthen publicity and education, improve the overall legal system. We must strengthen safety management, establish and improve the education, supervision, and e
23、valuation as one of the traffic safety management mechanism. To conscientiously sum up the Olympic security controls, promoting integrated management to a higher level, higher standards, a higher level of development. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, a
24、t this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation companies mature and symmetry breathing. Recalling past one another across a railing, we are enthusiastic and full of confidence. Future development opportunities,
25、we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low-cost operation, full of humane care of a world-class power generation company and work hard! The occasion of the Spring Festival, my sincere wish that you and the
26、 families of the staff in the new year, good health, happy, happy!PAGE 26利用设在基坑边的固定泵输送砼到施工面,人工摊铺,平板振捣器振捣密实,用刮杠沿模板顶将砼刮平,并用木抹搓平压实,确保砼密实和表面平整。砼浇注时埋设支立模板及钢筋支架所需预埋铁件play levels cadres in enterprise development in the of backbone backbone role; to full strengthening members youth work, full play youth emp
27、loyees in company development in the of force role; to improve independent Commission against corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further strengthen publicity and education, improve the overall legal system. We
28、 must strengthen safety management, establish and improve the education, supervision, and evaluation as one of the traffic safety management mechanism. To conscientiously sum up the Olympic security controls, promoting integrated management to a higher level, higher standards, a higher level of deve
29、lopment. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, at this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation companies mature and symmetry breathing. Recalling past one another acros
30、s a railing, we are enthusiastic and full of confidence. Future development opportunities, we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low-cost operation, full of humane care of a world-class power generation c
31、ompany and work hard! The occasion of the Spring Festival, my sincere wish that you and the families of the staff in the new year, good health, happy, happy!PAGE 27We will continue to improve the companys internal control system, and steady improvement in ability to manage and control, optimize busi
32、ness processes, to ensure smooth processes, responsibilities in place; to further strengthen internal controls, play a control post independent oversight role of evaluation complying with third-party responsibility; to actively make use of internal audit tools detect potential management, streamline
33、, standardize related transactions, strengthening operations in accordance with law. Deepening the information management to ensure full communication zero resistance. To constantly perfect ERP, and BFS+, and PI, and MIS, and SCM, information system based construction, full integration information s
34、ystem, achieved information resources shared; to expand Portal system application of breadth and depth, play information system on enterprise of Assistant role; to perfect daily run maintenance operation of records, promote problem reasons analysis and system handover; to strengthening BFS+, and ERP
35、, and SCM, technology application of training, improve employees application information system of capacity and level. Humanistic care to ensure zero. To strengthening Humanities care, continues to foster company wind clear, and gas are, and heart Shun of culture atmosphere; strengthening love helpe
36、d trapped, care difficult employees; carried out style activities, rich employees life; strengthening health and labour protection, organization career health medical, control career against; continues to implementation psychological warning prevention system, training employees health of character,
37、 and stable of mood and enterprising of attitude, created friendly fraternity of Humanities environment. To strengthen risk management, ensure that the business of zero risk. To strengthened business plans management, will business business plans cover to all level, ensure the business can control i
38、n control; to close concern financial, and coal electric linkage, and energy-saving scheduling, national policy trends, strengthening track, active should; to implementation State-owned assets method, further specification business financial management; to perfect risk tube control system, achieved
39、risk recognition, and measure, and assessment, and report, and control feedback of closed ring management, improve risk prevention capacity. To further standardize trading, and strive to achieve according to law, standardize and fair. Innovation of performance management, to ensure that potential em
40、ployees zero fly. To strengthen performance management, process control, enhance employee evaluation and levels of effective communication to improve performance management. To further quantify and refine employee standards . Work, full play party, and branch, and members in five type Enterprise con
41、struction in the of core role, and fighting fortress role and pioneer model role; to continues to strengthening four good leadership construction利用设在基坑边的固定泵输送砼到施工面,人工摊铺,平板振捣器振捣密实,用刮杠沿模板顶将砼刮平,并用木抹搓平压实,确保砼密实和表面平整。砼浇注时埋设支立模板及钢筋支架所需预埋铁件play levels cadres in enterprise development in the of backbone back
42、bone role; to full strengthening members youth work, full play youth employees in company development in the of force role; to improve independent Commission against corruption work level, strengthening on enterprise business key link of effectiveness monitored. , And maintain stability. To further
43、strengthen publicity and education, improve the overall legal system. We must strengthen safety management, establish and improve the education, supervision, and evaluation as one of the traffic safety management mechanism. To conscientiously sum up the Olympic security controls, promoting integrate
44、d management to a higher level, higher standards, a higher level of development. Employees, today is lunar calendar on December 24, the ox Bell is about to ring, at this time of year, we clearly feel the pulse of the XX power generation company to flourish, to more clearly hear XX power generation c
45、ompanies mature and symmetry breathing. Recalling past one another across a railing, we are enthusiastic and full of confidence. Future development opportunities, we more exciting fight more spirited. Employees, let us together across 2013 full of challenges and opportunities, to create a green, low
46、-cost operation, full of humane care of a world-class power generation company and work hard! The occasion of the Spring Festival, my sincere wish that you and the families of the staff in the new year, good health, happy, happy!实验报告要求:一写4个实验报告,每个报告装订成一份,每人4份,不要将4个实验报告装订成1份了。实验一:常用电子仪器的使用。(包括示波器的使用、
47、万用表的使用、函数信号发生器的使用等内容)实验二:晶体管共射极单管放大器实验三:射极跟随器实验四:差动放大器二手写报告,不得打印。三具体怎样写实验报告,可参考大学物理实验报告的要求。四3月26日前,收好后统一交给老师。模拟电子实验指导书目 录 TOC o 1-1 h z u HYPERLINK l _Toc 实验一示波器原理及使用 PAGEREF _Toc h 2 HYPERLINK l _Toc 实验二晶体管共射极单管放大器 PAGEREF _Toc h 12 HYPERLINK l _Toc 实验三射极跟随器 PAGEREF _Toc h 19 HYPERLINK l _Toc 实验四差动
48、放大器 PAGEREF _Toc h 24实验一示波器原理及使用一、示波器的基本结构示波器的种类很多,但它们都包含下列基本组成部分,如附图11 所示。附图11 示波器的基本结构框图主机主机包括示波管及其所需的各种直流供电电路,在面板上的控制旋钮有:辉度、聚焦、水平移位、垂直移位等。2、垂直通道垂直通道主要用来控制电子束按被测信号的幅值大小在垂直方向上的偏移。它包括Y轴衰减器,Y轴放大器和配用的高频探头。通常示波管的偏转灵敏度比较低,因此在一般情况下,被测信号往往需要通过Y轴放大器放大后加到垂直偏转板上, 才能在屏幕上显示出一定幅度的波形。 Y轴放大器的作用提高了示波管Y轴偏转灵敏度。为了保证Y
49、轴放大不失真,加到Y轴放大器的信号不宜太大,但是实际的被测信号幅度往往在很大范围内变化,此Y轴放大器前还必须加一Y轴衰减器,以适应观察不同幅度的被测信号。示波器面板上设有“Y轴衰减器”(通常称“Y轴灵敏度选择”开关)和“Y轴增益微调”旋钮,分别调节Y 轴衰减器的衰减量和Y轴放大器的增益。对Y轴放大器的要求是:增益大,频响好,输入阻抗高。为了避免杂散信号的干扰,被测信号一般都通过同轴电缆或带有探头的同轴电缆加到示波器Y轴输入端。但必须注意,被测信号通过探头 幅值将衰减(或不衰减),其衰减比为101(或11)。3、水平通道水平通道主要是控制电子束按时间值在水平方向上偏移。主要由扫描发生器、水平放大
50、器、触发电路组成。扫描发生器扫描发生器又叫锯齿波发生器,用来产生频率调节范围宽的锯齿波,作为X 轴偏转板的扫描电压。锯齿波的频率(或周期)调节是由“扫描速率选择”开关和“扫速微调”旋钮控制的。使用时,调节“扫速选择”开关和“扫速微调”旋钮,使其扫描周期为被测信号周期的整数倍,保证屏幕上显示稳定的波形。水平放大器其作用与垂直放大器一样,将扫描发生器产生的锯齿波放大到X轴偏转板所需的数值。触发电路用于产生触发信号以实现触发扫描的电路。为了扩展示波器应用范围,一般示波器上都设有触发源控制开关,触发电平与极性控制旋钮和触发方式选择开关等。二、示波器的二踪显示二踪显示原理示波器的二踪显示是依靠电子开关的
51、控制作用来实现的。电子开关由“显示方式”开关控制,共有五种工作状态,即Y1、Y2、Y1Y2、交替、断续。当开关置于“交替”或“断续”位置时,荧光屏上便可同时显示两个波形。当开关置于“交替”位置时,电子开关的转换频率受扫描系统控制,工作过程如附图12所示。即电子开关首先接通Y2通道,进行第一次扫描,显示由Y2通道送入的被测信号的波形;然后电子开关接通Y1通道,进行第二次扫描,显示由Y1通道送入的被测信号的波形;接着再接通Y2通道这样便轮流地对Y2和Y1两通道送入的信号进行扫描、显示,由于电子开关转换速度较快,每次扫描的回扫线在荧光屏上又不显示出来,借助于荧光屏的余辉作用和人眼的视觉暂留特性,使用
52、者便能在荧光屏上同时观察到两个清晰的波形。这种工作方式适宜于观察频率较高的输入信号场合。当开关置于“断续”位置时,相当于将一次扫描分成许多个相等的时间间隔。在第一次扫描的第一个时间间隔内显示Y2信号波形的某一段;在第二个时间时隔内显示Y1信号波形的某一段;以后各个时间间隔轮流地显示Y2、Y1两信号波形的其余段,经过若干次断续转换,使荧光屏上显示出两个由光点组成的完整波形如附图13(a)所示。由于转换的频率很高,光点靠得很近,其间隙用肉眼几乎分辨不出,再利用消隐的方法使两通道间转换过程的过渡线不显示出来,见附图13(b),因而同样可达到同时清晰地显示两个波形的目的。这种工作方式适合于输入信号频率
53、较低时使用。 附图1-2 交替方式显示波形 附图1-3 断续方式显示波形2、触发扫描在普通示波器中,X轴的扫描总是连续进行的,称为“连续扫描”。为了能更好地观测各种脉冲波形,在脉冲示波器中,通常采用“触发扫描”。采用这种扫描方式时,扫描发生器将工作在待触发状态。它仅在外加触发信号作用下,时基信号才开始扫描,否则便不扫描。这个外加触发信号通过触发选择开关分别取自“内触发”(Y轴的输入信号经由内触发放大器输出触发信号),也可取自“外触发”输入端的外接同步信号。其基本原理是利用这些触发脉冲信号的上升沿或下降沿来触发扫描发生器,产生锯齿波扫描电压,然后经X轴放大后送X轴偏转板进行光点扫描。适当地调节“
54、扫描速率”开关和“电平”调节旋钮,能方便地在荧光屏上显示具有合适宽度的被测信号波形。上面介绍了示波器的基本结构,下面将结合使用介绍电子技术实验中常用的CA8020型双踪示波器。三、CA8020型双踪示波器1、概述CA8020型示波器为便携式双通道示波器。本机垂直系统具有020MHz的频带宽度和5mV/DIV5V/DIV的偏转灵敏度,配以101探极,灵敏度可达5V/DIV。本机在全频带范围内可获得稳定触发,触发方式设有常态、自动、TV和峰值自动,尤其峰值自动给使用带来了极大的方便。内触设置了交替触发,可以稳定地显示两个频率不相关的信号。本机水平系统具有0.5S/DIV0.2S/DIV的扫描速度,
55、并设有扩展10,可将最快扫速度提高到20nS/DIV。2、面板控制件介绍CA8020面板图如附图14所示附图14CA8020型双踪示波器面板图序号控制件名称功能(1)亮度调节光迹的亮度(2)辅助聚焦与聚焦配合,调节光迹的清晰度(3)聚焦调节光迹的清晰度(4)迹线旋转调节光迹与水平刻度线平行(5)校正信号提供幅度为0.5V,频率为1KHz的方波信号,用于校正101探极的补偿电容器和检测示波器垂直与水平的偏转因数(6)电源指示电源接通时,灯亮(7)电源开关电源接通或关闭(8)CH1移位PULL CH1XCH2Y调节通道1光迹在屏幕上的垂直位置,用作XY显示(9)CH2移位PULL INVERT调节
56、通道2光迹在屏幕上的垂直位置,在ADD方式时使CH1CH2或CH1CH2(10)垂直方式CH1或CH2:通道1或通道2单独显示ALT:两个通道交替显示CHOP:两个通道断续显示,用于扫速较慢时的双踪显示ADD:用于两个通道的代数和或差(11)垂直衰减器调节垂直偏转灵敏度(12)垂直衰减器调节垂直偏转灵敏度(13)微调用于连续调节垂直偏转灵敏度,顺时针旋足为校正位置(14)微调用于连续调节垂直偏转灵敏度,顺时针旋足为校正位置(15)耦合方式(AC-DC-GND)用于选择被测信号饋入垂直通道的耦合方式(16)耦合方式(AC-DC-GND)用于选择被测信号饋入垂直通道的耦合方式(17)CH1ORX被
57、测信号的输入插座(18)CH2 ORY被测信号的输入插座(19)接地(GND)与机壳相联的接地端(20)外触发输入外触发输入插座(21)内触发源用于选择CH1、CH2或交替触发(22)触发源选择用于选择触发源为INT(内),EXT(外)或LINE(电源)(23)触发极性用于选择信号的上升或下降沿触发扫描(24)电平用于调节被测信号在某一电平触发扫描(25)微调用于连续调节扫描速度,顺时针旋足为校正位置(26)扫描速率用于调节扫描速度(27)触发方式常态(NORM):无信号时,屏幕上无显示;有信号时,与电平控制配合显示稳定波形。自动(AUTO):无信号时,屏幕上显示光迹;有信号时,与电平控制配合
58、显示稳定波形。电视场(TV):用于显示电视场信号。峰值自动(PPAUTO):无信号时,屏幕上显示光迹;有信号时,无须调节电平即能获得稳定波形显示。(28)触发指示在触发扫描时,指示灯亮(29)水平移位PULL10调节迹线在屏幕上的水平位置拉出时扫描速度被扩展10倍3、操作方法1)、电源检查CA8020双踪示波器电源电压为220V10%。接通电源前,检查当地电源电压,如果不相符合,则严格禁止使用!2)、面板一般功能检查A将有关控制件按下表置位控制件名称作用位置控制件名称作用位置亮度居中触发方式峰值自动聚焦居中扫描速率0.5mS/div位移居中极性正垂直方式CH1触 发 源INT灵敏度选择10mV
59、/div内触发源CH1微调校正位置输入耦合ACB接通电源,电源指示灯亮,稍预热后,屏幕上出现扫描光迹,分别调节亮度、聚焦、辅助聚焦、迹线旋转、垂直、水平移位等控制件,使光迹清晰并与水平刻度平行。C用101探极将校正信号输入至CH1输入插座。D调节示波器有关控制件,使荧光屏上显示稳定且易观察方波波形。E将探极换至CH2输入插座,垂直方式置于“CH2”,内触发源置于“CH2”,重复D操作。3)、垂直系统的操作A垂直方式的选择当只需观察一路信号时,将“垂直方式”开关置“CH1”或“CH2”,此时被选中的通道有效,被测信号可从通道端口输入。当需要同时观察两路信号时,将“垂直方式”开关置“交替”,该方式
60、使两个通道的信号被交替显示,交替显示的频率受扫描周期控制。当扫速低于一定频率时,交替方式显示会出现闪烁,此时应将开关置于“断续”位置。当需要观察两路信号代数和时,将“垂直方式”开关置于“代数和”位置,在选择这种方式时,两个通道的衰减设置必须一致,CH2移位处于常态时为CH1CH2,CH2移位拉出时为CH1CH2。B输入耦合方式的选择直流(DC)耦合:适用于观察包含直流成份的被测信号,如信号的逻辑电平和静态信号的直流电平,当被测信号的频率很低时,也必须采用这种方式。交流(AC)耦合:信号中的直流分量被隔断,用于观察信号的交流份量,如观察较高直流电平上的小信号。接地(GND):通道输入端接地(输入
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