电子技术实验报告_基本共射放大电路

电子技术 实验报告 化学实验报告单总流体力学实验报告观察种子结构实验报告观察种子结构实验报告单观察种子的结构实验报告单 _基本共射放大电路 学生实验 报告 软件系统测试报告下载sgs报告如何下载关于路面塌陷情况报告535n,sgs报告怎么下载竣工报告下载 院别 电子信息学院 课程名称 电子技术实验 班级 实验名称 基本共射放大电路 姓名 实验时间 2014年2 月26 日 学号 指导教师 报 告 内 容 一、实验目的和任务 1. 加深对基本共射放大电路放大特性的理解; 2. 学习放大电路的静态工作点参数的测量 方法 快递客服问题件处理详细方法山木方法pdf计算方法pdf华与华方法下载八字理论方法下载 ; 3. 了解电路参数对静态工作点的影响和静态调试方法; 4. 学习放大电路交流参数的测量方法; 5. 学习常用电子仪器的使用。 二、实验原理介绍 图1-1为基本共射放大电路原理图 ，图1-2是其直流通路。 +12v+12v RbRc1RbRc1 33k2k 33k2k RpRpC2680k680k Uo C110u Us 10u 图1-1 基本共射放大电路 图1-2 直流通路 首先，对该电路作直流分析。分析图1-2的直流通路，可得到如下直流工作参数的关系 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 达式: V,UCCBEI, (1-1) BRb I,,I (1-2) CB development in order to protect a host of attractions and historical sites, as well as to maintain the economic vitality of the downtown area. Figure 5.1-5 figure 5.1.4 Washington mass transit network to support implementation of effective transport demand management policies to reduce urban traffic congestion and public transport priority was in the early 1960 of the 20th century by the planners first proposed in Paris, France, and in Europe and other major cities to operate has been the formation of the rich content system. Public transport priority consists of two aspects: one is on the bus to help. ... 5.1-7 Park and ride systems 5.1.5 typical case Hong Kong-Japan Sapporo, Sapporo is a Japan Hokkaido central parts of cities, Japan's fifth largest city. Area of 1121km2 in the city, a population of 1.921 million. In addition is the administrative center of Hokkaido, Sapporo is Hokkaido's industrial and commercial center, in 1972, hosted the 11th Winter Olympic Games. 3 JR Sapporo rail transit line 3 metro and 3 tram lines, Sapporo in the urban development process combined with Center of construction of subway construction and residential development, and support the development of the region. Prior to 1971, Sapporo, Japan Hokkaido local Centre in the urban development process, in response to the rapid growth of the city centre traffic demand, building trams. 1981 years ago for holding the winter Olympic Games as an opportunity to start building connected to the venue and the city centre (1-3) U,V,RICECCCC 从以上表达式中可知，R、R、V对三极管的静态工作点都存在作用。静态工作点bCCC 的设置，应使三极管在整个信号的变化范围内都处于放大区之中。截止失真的产生，主要是由于静态电流I太小，导致静态工作点接近截止区;要消除截止失真，应调节输入回路B 参数(如减小R、增大V)，使I增大。出现饱和失真时，三极管的U小于1V，而且bCCBCE饱和深度越大，U越小;因此，也可以据U的大小来判断三极管是否处于饱和状态;CECE 此时若要三极管退出饱和、进入放大区，应增大R以减小静态工作电流，或者减小R以bC升高集电极电位。实验中，由于输入信号幅度过大也会引致产生削波失真，此时应适当减小交流输入信号U的幅度。 i 在实验中，电路元件参数的改变(如减小R、R，增大V)，都应以不超过三极管bCCC的耐压和功耗为前提。 在放大电路中，交流输入信号U经放大后，在放大电路的输出端形成交流输出电压i U，电压放大倍数A可以用下式来计算: OU U,(R//R)OCLA,,, (1-4) UUribe 式中，r是三极管的交流输入电阻。它可用下式近似估算: be 26 (1-5) r,300，(1，,)(,)beIE 其中，I是三极管的射极静态电流，单位是毫安(mA)。 E 从以上动态分析表达式中可见，电压放大倍数的大小与负载R的大小有关，R增大LL 时，电压放大倍数A的绝对值也增大。 U 三、实验 内容 财务内部控制制度的内容财务内部控制制度的内容人员招聘与配置的内容项目成本控制的内容消防安全演练内容 和数据记录 静态工作点参数测试 (1) 观察R对静态工作点参数的影响。 b V =12V，R=2 kΩ，R分别取33kΩ、100kΩ、200kΩ、300kΩ、600kΩ。用万能表CCCb 分别测量各个R阻值下的静态工作点参数，将测量结果填入表1-1，并据U的大小来判bCE断三极管的工作状态。 表1-1 33k,R(Ω) 100kΩ 200kΩ 300kΩ 600kΩ b U(V) 0.067 0.116 0.160 0.202 3.96 CE 工作状态 饱和区 饱和区 饱和区 饱和区 放大区 development in order to protect a host of attractions and historical sites, as well as to maintain the economic vitality of the downtown area. Figure 5.1-5 figure 5.1.4 Washington mass transit network to support implementation of effective transport demand management policies to reduce urban traffic congestion and public transport priority was in the early 1960 of the 20th century by the planners first proposed in Paris, France, and in Europe and other major cities to operate has been the formation of the rich content system. Public transport priority consists of two aspects: one is on the bus to help. ... 5.1-7 Park and ride systems 5.1.5 typical case Hong Kong-Japan Sapporo, Sapporo is a Japan Hokkaido central parts of cities, Japan's fifth largest city. Area of 1121km2 in the city, a population of 1.921 million. In addition is the administrative center of Hokkaido, Sapporo is Hokkaido's industrial and commercial center, in 1972, hosted the 11th Winter Olympic Games. 3 JR Sapporo rail transit line 3 metro and 3 tram lines, Sapporo in the urban development process combined with Center of construction of subway construction and residential development, and support the development of the region. Prior to 1971, Sapporo, Japan Hokkaido local Centre in the urban development process, in response to the rapid growth of the city centre traffic demand, building trams. 1981 years ago for holding the winter Olympic Games as an opportunity to start building connected to the venue and the city centre R增大时， U会随着增大工作点会向放大区移动。 bCE (2) 观察RC对静态工作点参数的影响 V =12V，R=300kΩ，R分别取2 kΩ、5.1kΩ ,用万能表分别测量每一个R阻值下CCbCC的静态工作点参数，将测量结果填入表1-2中，确定三极管的工作状态。 表1-2 R (kΩ) 2 5.1 C U(V) 4.54 0.206 CE 工作状态 放大区 饱和区 据以上表格的结果， RC增大时，Uce变小工作点向饱和区移动。 (3) 观察电源电压E对U的影响。 CCE R=600kΩ，R=2kΩ，V分别取3V、6V、12V，分别测量出在E取不同值时的UbCCCCCE 值，将结果填入表1-3。 表1-3 V (V) 3 6 12 CC U (V) 1.47 2.54 4.47 CE 1. 动态研究 (1)按图1.3所示电路接线，调R使V为6V。 bc (2)将信号发生器的输出信号调到f=1KHz，V为500mV，接至放大电路的Us点，P-P 经过R、R衰减(100倍)，U点得到5mV的小信号，观察U和U端波形，并比较相位。 12iiO (3)信号源频率不变，逐渐加大信号源幅度，观察U不失真时的最大值并填表1,4。 O 表1,4 实测 实测计算 估算 U(mV) U(V) AAiOV V 5 0.436 87.2 107 30 2.48 80.4 107 50 3.88 77.7 107 development in order to protect a host of attractions and historical sites, as well as to maintain the economic vitality of the downtown area. Figure 5.1-5 figure 5.1.4 Washington mass transit network to support implementation of effective transport demand management policies to reduce urban traffic congestion and public transport priority was in the early 1960 of the 20th century by the planners first proposed in Paris, France, and in Europe and other major cities to operate has been the formation of the rich content system. Public transport priority consists of two aspects: one is on the bus to help. ... 5.1-7 Park and ride systems 5.1.5 typical case Hong Kong-Japan Sapporo, Sapporo is a Japan Hokkaido central parts of cities, Japan's fifth largest city. Area of 1121km2 in the city, a population of 1.921 million. In addition is the administrative center of Hokkaido, Sapporo is Hokkaido's industrial and commercial center, in 1972, hosted the 11th Winter Olympic Games. 3 JR Sapporo rail transit line 3 metro and 3 tram lines, Sapporo in the urban development process combined with Center of construction of subway construction and residential development, and support the development of the region. Prior to 1971, Sapporo, Japan Hokkaido local Centre in the urban development process, in response to the rapid growth of the city centre traffic demand, building trams. 1981 years ago for holding the winter Olympic Games as an opportunity to start building connected to the venue and the city centre VCC+12v R3Rc1 33k 5.1k Rp10u680k Uo C2UiC1R1 Us 5.1kAB10u RL5.1kR2R4 51 24k Re1C2 1.8k10u 图1.3 小信号放大电路 (4) U=5mV(R=5.1K 断开负载R)，减小R，使V,4V，可观察到(U波形)饱iCLPcO和失真;增大R，使V,9V，将R由5.1K改为510Ω(即:使U=50mV)，可观察到(UPc1iO波形)截止失真，将测量结果填入表1,5。 表1,5 RVVV输出波形情况 P b c e 小 3.39 3.29 3.26 合适 2.54 6.00 1.87 大 1.35 10.52 0.73 图1 饱和失真图像 图2 正常图像 图3 截止失真图像 四、实验结论与心得 development in order to protect a host of attractions and historical sites, as well as to maintain the economic vitality of the downtown area. Figure 5.1-5 figure 5.1.4 Washington mass transit network to support implementation of effective transport demand management policies to reduce urban traffic congestion and public transport priority was in the early 1960 of the 20th century by the planners first proposed in Paris, France, and in Europe and other major cities to operate has been the formation of the rich content system. Public transport priority consists of two aspects: one is on the bus to help. ... 5.1-7 Park and ride systems 5.1.5 typical case Hong Kong-Japan Sapporo, Sapporo is a Japan Hokkaido central parts of cities, Japan's fifth largest city. Area of 1121km2 in the city, a population of 1.921 million. In addition is the administrative center of Hokkaido, Sapporo is Hokkaido's industrial and commercial center, in 1972, hosted the 11th Winter Olympic Games. 3 JR Sapporo rail transit line 3 metro and 3 tram lines, Sapporo in the urban development process combined with Center of construction of subway construction and residential development, and support the development of the region. Prior to 1971, Sapporo, Japan Hokkaido local Centre in the urban development process, in response to the rapid growth of the city centre traffic demand, building trams. 1981 years ago for holding the winter Olympic Games as an opportunity to start building connected to the venue and the city centre 本实验结论是:1、改变Rb与Rc的值从而改变三极管的静态工作点; 2、当三极管不在放大区时，就会产生信号的失真。 成绩 教师签名 批改时间 年 月 日 development in order to protect a host of attractions and historical sites, as well as to maintain the economic vitality of the downtown area. Figure 5.1-5 figure 5.1.4 Washington mass transit network to support implementation of effective transport demand management policies to reduce urban traffic congestion and public transport priority was in the early 1960 of the 20th century by the planners first proposed in Paris, France, and in Europe and other major cities to operate has been the formation of the rich content system. Public transport priority consists of two aspects: one is on the bus to help. ... 5.1-7 Park and ride systems 5.1.5 typical case Hong Kong-Japan Sapporo, Sapporo is a Japan Hokkaido central parts of cities, Japan's fifth largest city. Area of 1121km2 in the city, a population of 1.921 million. In addition is the administrative center of Hokkaido, Sapporo is Hokkaido's industrial and commercial center, in 1972, hosted the 11th Winter Olympic Games. 3 JR Sapporo rail transit line 3 metro and 3 tram lines, Sapporo in the urban development process combined with Center of construction of subway construction and residential development, and support the development of the region. Prior to 1971, Sapporo, Japan Hokkaido local Centre in the urban development process, in response to the rapid growth of the city centre traffic demand, building trams. 1981 years ago for holding the winter Olympic Games as an opportunity to start building connected to the venue and the city centre