实作课程
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| 实验 | 课程单元 | 实验实作 |
|---|---|---|
| 1 | 课程介绍 Course Introduction |
如何连接电源 How to connect the power supply 如何用万用表读电压、电阻和电流 How to read a voltage, resistance, and current with the DMM 识别电阻 Reading resistors 怎么放面包板 How protoboard is laid out 每一组建立一个输出为3.3伏特的分压器，测量输出电压。但是每一组要求使用不同的电阻（从100欧到100千欧） Each team builds a voltage divider with nom. 3.3 V output, and measure Vout. However, each team works in different resistance regimes (from 100's of Ohms to 100 kOhm) 每一组给他们的分压器接上同一组负载电阻（100欧姆到100兆欧姆） Each team puts same set of load resistors on their dividers (100's ohms to MOhm) 所有组交换数据，并根据所有的数据在自己的笔记本上画出图形－讨论分压器的工作 All teams exchange data and plot results from all teams on one graph in their notebooks - discuss loading of dividers! |
| 2 | 电阻和二极管 Resistors and Diodes |
二极管灯驱动器 LED lamp driver 驱动并行和串行的多个二极管 Driving multiple LEDs in parallel and series 使用电压计来限制电流，绘制I－V曲线，每一组使用不同颜色的二极管（其中一组施用硅信号二极管） Use potentiometer to limit current and map I-V curve, each team with different color LED (one team with silicon signal diode) 所有组交换数据，并根据所有的数据在自己的笔记本上画出图形 All teams exchange data and plot results from all teams on one graph in their notebooks 搭建和测试7805电路／负载 Build and test 7805 circuit w/load |
| 3 | 桥电路 Bridge Circuits |
用二极管搭建桥整流器，用负载电阻限制电流 Build bridge rectifier with LEDs and use the load resister to limit current 根据交流输入的极性观察亮灯的传导路径 See conduction paths light up depending on polarity of AC input 在两种极性下测量负载两端的电压 Measure voltage drop across load for both polarities 用9V电池时，在两种极性下测量负载两端对地的电压 Measure voltage at each end of load w.r.t. ground of 9V battery for both polarities 机械开关限制了速度，因此我们引入波形发生器 Mechanical switch limits speed, so introduce function generator 找到不产生闪缩的最大频率 Find maximum frequency that gives no flicker 介绍用示波器测量波形 Introduce Oscilloscope to view waveforms |
| 4 | 示波器和电容 Oscilloscopes and Capacitors |
复习示波器的操作 Review operation of Oscilloscope 在上一周的桥电路上加入波动消减滤波器 Add ripple reduction filter on bridge rectifier from last week |
| 5 | 滤波器 Filters |
每一组使用不同的RC组合搭建低通滤波器，测量在10－12赫兹的幅度反应 Each team uses unique RC combination for low-pass filter, measures amplitude response at 10-12 frequency 所有组交换数据，并根据所有的数据在自己的笔记本上画出图形－讨论不同的启动电压 All teams exchange data and plot results from all teams on one graph in their notebooks - discuss different turn-on voltages 对高通滤波器重复3）4） Repeat 3) and 4) for high-pass filters |
| 6 | 继电器和晶体管 Relays and Transistors |
驱动电机去关掉电源 Drive motor off of power supply 搭建继电器驱动器来控制发光二极管 Build relay driver to toggle LED 搭建继电器驱动器来控制电机 Build relay driver to toggle motor 搭建非蛋白氨晶体管来驱动发光二极管，演示 Build NPN transistor switch driving LED and demonstrate 用波形发生器驱动晶体管控制的发光二极管 Drive transistor-controlled LED with function generator 搭建和演示非蛋白氨晶体管开关驱动的电机 Build and demonstrate NPN transistor switch driving motor |
| 7 | 运算放大器 Op-Amps |
用基于电压计的分压器作为输入，搭建放大倍数为2的逆向运算放大器。驱动不同的负载，与纯分压器作比较 Build x2 gain inverting op-amp with potentiometer-based voltage divider as input. Drive a range of loads, compare results to bare divider 每一组搭建、测量和分析不同的运算放大电路 Give each team a different op-amp circuit to build, measure, and analyze 每一组在课堂上讲述他们的分析结果 Each team presents results and analysis for its circuit to rest of class |
| 8 | 555定时器电路 555 Timer Circuit |
用555搭建一个单步定时器来驱动发光二极管 Build 555 as one-shot driving an LED 讲述内部模型并分析 Present internal model and analyze 用555搭建一个振荡器来驱动发光二极管 Build 555 as oscillator driving an LED |
| 9 | 传感器 Sensors |
在光强低和光强高的情况下分别测量CdS电池的电阻 Measure resistance of CdS cells under low and high levels of light 用测得的结果选择一个固定的电阻，并且用此电阻与CdS电池一起做一个分压电路来检测光 Use results to select a fixed resistor, use that resistor and CdS cell to make voltage divider circuit to detect light 用比较器来驱动发光二极管 Use comparator to drive LED 用分压器（分压计）作为比较器驱动发光二极管的输入 Voltage divider (potentiometer) as input to comparator-driven LED 用CdS电池做成的分压电路作为输入 CdS cell divider as input 受光控制的电机 Light-activated motor 加入RC滤波器，得到开（关）灯瞬间的电机驱动力 Add RC filter to get transient motor drive when light turns on (or off) |
