在Multisim 10软件环境下,设计一种由运算放大器构成的精确可控矩形波信号发生器,结合系统电路原理图重点阐述了各参数指标的实现与测试方法。通过改变RC电路的电容充、放电路径和时间常数实现了占空比和频率的调节,通过多路开关投入不同数值的电容实现了频段的调节,通过电压取样和同相放大电路实现了输出电压幅值的调节并提高了电路的带负载能力,可作为频率和幅值可调的方波信号发生器。Multisim 10仿真分析及应用电路测试结果表明,电路性能指标达到了设计要求。 Abstract: Based on Multisim 10, this paper designed a kind of rectangular-wave signal generator which could be controlled exactly composed of operational amplifier, the key point was how to implement and test the parameter indicators based on the circuit diagram. The duty and the frequency were adjusted by changing the time constant and the way of charging and discharging of the capacitor, the width of frequency was adjusted by using different capacitors provided with multiple switch, the amplitude of output voltage was adjusted by sampling voltage and using in-phase amplifier circuit,the ability of driving loads was raised, the circuit can be used as squarewave signal generator whose frequency and amplitude can be adjusted. The final simulation results of Multisim 10 and the tests of applicable circuit show that the performance indicators of the circuit meets the design requirements.
上传时间: 2014-01-21
上传用户:shen007yue
3. 设计一个接口Shape,接口中包含方法:Draw和Resize。定义一些具体类,如:Point、Line、Circle、Rectangle等,每个类都实现接口Shape。Draw方法绘制图形,Resize方法改变图形大小。用Java实现这些接口和类,并用测试类测试它们。 注意:不需要真正绘制图形,如Line的Draw方法只需输出下面文本即可: “直线的起点是(x1,y1,),终点是(x2,y2)”
上传时间: 2015-02-09
上传用户:frank1234
AN2120, Connecting an M68HC08 Family Microcontroller to an Internet Service Provider (ISP) Using the Point-to-Point Protocol (PPP).
标签: Microcontroller Connecting Internet Provider
上传时间: 2013-12-17
上传用户:标点符号
UnZip is a small zipfile extract utility. It is written to be assmall portable as possible and is intended to be starting point for im-plementation of .ZIP files in non-IBM environments.Source code is provided in C and Turbo Pascal. If you port this programto a non-IBM system, I would appreciate a copy of the ported source andexe files.
标签: is portable possible extract
上传时间: 2014-01-20
上传用户:维子哥哥
This program demonstrates how to do disconnected briefcase applications with ADO. When the Connected checkbox is unchecked the application is switched into offline mode. If the application is exited at that point then the data is persisted to a file on disk (along with any edits to the data). When the application is restarted it will load the persisted data if present, otherwise it will fetch the data from the database.
标签: demonstrates applications disconnected Connected
上传时间: 2015-03-24
上传用户:xcy122677
木马源程序 /*实现了以下功能: 1.IP变换后自动发送Email通知 2.nt/window2000下绑定cmd,98下绑定command 3.sniffer整个无交换网络的telnet pop3密码功能 */ // troja3.cpp : Defines the entry point for the application. //written by Justin 小鱼巫师 2002年5月
上传时间: 2014-11-01
上传用户:xymbian
Blaster is a simple application that illustrates Windows NT 5.0’s support of the IrDA protocol. IrDA provides reliable point to point connectivity between 2 computers equipped with infrared
标签: IrDA application illustrates protocol
上传时间: 2015-03-29
上传用户:Thuan
This simple simulation of a pulse traveling down a parallel-plate guide makes a handy test code for initial experiments with boundary conditions. ToyFDTD3 adds some simple features to ToyFDTD1: A PMC boundary condition, a sinusoidal pulse source, and output tracking a single point in the mesh. Released 15 June 1999.
标签: parallel-plate simulation traveling simple
上传时间: 2015-04-06
上传用户:stella2015
TC 2.0 挖地雷 关于TC2.0版的挖地雷 1、整个游戏基于事件驱动的工作方式,这一点和windows应用程序是相通的。在程序的主 干中,不停的捕捉鼠标事件,再通过一个函数: Bool analysis(CPoint point, ClickInfor infor) 来分析鼠标事件作用在哪个对象上(游戏中的元素,比如按钮、菜单、地雷单元格都是 作为一个对象来看待),然后把鼠标事件分配到相应的对象上。不同的对象,对鼠标事件 有自己的事件处理函数,比如菜单的事件处理函数有两个:单击菜单项和鼠标焦点落在 菜单项上。菜单对象能够依据analysis传给它的击键信息,来判断到底调用哪个事件处 理函数。(在windows编程中,其实也是给对象或控件写事件处理函数)。 当然了,我这个程序中事件处理机制是非常基础和简单的,因为用的是TC2.0的编译器, 所以很多东西要自己写,会麻烦一些。 ………………详细情况见包内文档!
上传时间: 2013-12-24
上传用户:佳期如梦
current version V0.2 功能:在LCD液晶屏上显示相关信息,可以从16个按键上接受信息。 代码改为在Bank0-RAM执行,免去做实验时的来回修改Boot1与Boot0的跳线, 修改之处:修改mem_b.scf(原为mem_bb.scf)中的81xx xxxx为 80xx xxxx, 修改连接ADS项目的连接选项中的Entry Point为 0x80000000 ZLGARM SmartARM2200 实验程序LCM_Disp修改版本 加入了4×4键盘驱动(ZLG7290)
上传时间: 2014-01-02
上传用户:cc1015285075