在Multisim 10軟件環(huán)境下，設(shè)計(jì)一種由運(yùn)算放大器構(gòu)成的精確可控矩形波信號(hào)發(fā)生器，結(jié)合系統(tǒng)電路原理圖重點(diǎn)闡述了各參數(shù)指標(biāo)的實(shí)現(xiàn)與測(cè)試方法。通過(guò)改變RC電路的電容充、放電路徑和時(shí)間常數(shù)實(shí)現(xiàn)了占空比和頻率的調(diào)節(jié)，通過(guò)多路開(kāi)關(guān)投入不同數(shù)值的電容實(shí)現(xiàn)了頻段的調(diào)節(jié)，通過(guò)電壓取樣和同相放大電路實(shí)現(xiàn)了輸出電壓幅值的調(diào)節(jié)并提高了電路的帶負(fù)載能力，可作為頻率和幅值可調(diào)的方波信號(hào)發(fā)生器。Multisim 10仿真分析及應(yīng)用電路測(cè)試結(jié)果表明，電路性能指標(biāo)達(dá)到了設(shè)計(jì)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.
標(biāo)簽： Multisim 矩形波 信號(hào)發(fā)生器 仿真
上傳時(shí)間： 2014-01-21
上傳用戶：shen007yue
The project demonstrates many Windows common controls, including the extensive use of image lists. The project was used in the book "The Revolutionary Guide To MFC 4 Programming With Visual C++", published by Wrox Press.
標(biāo)簽： demonstrates including extensive controls
上傳時(shí)間： 2015-01-30
上傳用戶：zhengjian
A simple utility to split a concatenated vCard format file into separate files (IETF RFC 2426 - vCard MIME Directory Profile). It splits on the BEGIN:VCARD and END:VCARD tags. It was created to help import a Lotus Organizer export file into Palm Desktop
標(biāo)簽： concatenated separate utility simple
上傳時(shí)間： 2013-12-20
上傳用戶：gxf2016
Sanos Operating System Kernel ----------------------------- Sanos is an OS kernel for use in PC based server appliances. The kernel was developed as part of an experiment on investigating the feasibility of running java server applications without a traditional operating system only using a simple kernel.
標(biāo)簽： Sanos Operating Kernel System
上傳時(shí)間： 2014-01-03
上傳用戶：1159797854
基于matlab的mp3的讀寫(xiě)函數(shù)Mp3 toolbox for Matlab. Alfredo Fernandez Franco Aalborg University Departament of Acoustics M.Sc. Student aberserk@yahoo.com Includes 2 functions to write and read MP3 files. It works like the commands WAVWRITE and WAVREAD. 1.- Just unpack in the toolbox folder under the MATLAB directory. 2.- Set the MATLAB search path to include that folder. This version was made in MATLAB for WINDOWS only. I ll probably will make the UNIX version later. 01-11-2004.
標(biāo)簽： Departament University Fernandez Alfredo
上傳時(shí)間： 2014-12-02
上傳用戶：開(kāi)懷常笑
Addressbook using double-linked list. This example shows the use of a double-linked list by implementing an addressbook for the console. It has features like inserting, searching(linear), sorting(bubble sort), deleting and load/save to a file. I wrote this during my study of Applied Computer Science so it s intended mainly for students who want to know about some advanced programming techniques in C. The Code was compiled with MSVC++ 6.0 but it should compile with any ANSI-compliant compiler.
標(biāo)簽： double-linked list Addressbook implemen
上傳時(shí)間： 2014-01-24
上傳用戶：asddsd
Scalable k-means software and test datasets This package (a Unix tar file, gzipped) contains the source code for the software that was used to run the experiments for the article
標(biāo)簽： Scalable datasets contains software
上傳時(shí)間： 2015-04-05
上傳用戶：康郎
Bochs is a highly portable open source IA-32 (x86) PC emulator written in C++, that runs on most popular platforms. It includes emulation of the Intel x86 CPU, common I/O devices, and a custom BIOS. Currently, Bochs can be compiled to emulate a 386, 486, Pentium, Pentium Pro or AMD64 CPU, including optional MMX, SSE, SSE2 and 3DNow! instructions. Bochs is capable of running most Operating Systems inside the emulation including Linux, DOS, Windows 95/98 and Windows NT/2000. Bochs was written by Kevin Lawton and is currently maintained by the Bochs project at "http://bochs.sourceforge.net".
標(biāo)簽： emulator portable written highly
上傳時(shí)間： 2015-04-06
上傳用戶：FreeSky
CBC下寫(xiě)的串口編程，API函數(shù)實(shí)例 I wish this site had been around when I was trying to figure out how to make serial communications work in Windows95. I, like many programmers, was hit with the double-whammy of having to learn Windows programming and Win95 serial comm programming at the same time. I found both tasks confusing at best. It was particularly frustrating because I had, over the years, written so much stuff (including lots of serial comm software) for the DOS environment and numerous embedded applications. Interrupt driven serial comm, DMA transfer serial comm, TSR serial comm, C, assembler, various processors... you name it, it had written it. Yet, everything I knew seemed upside-down in the message-driven-callback world of Windows.
上傳時(shí)間： 2014-06-20
上傳用戶：cccole0605
The zlibex.pas unit included in this archive will work with delphi 5, 6,and 7. if you previously downloaded my delphi 5 unit, you will notice that the unit has been renamed. this was done because borland included in its delphi 6 and 7 lib directories a zlib.dcu file and i felt it was more correct to rename my unit and force developers to have to update their code than to make developers worry about the possible file contention in delphi 6 and 7.
標(biāo)簽： previously included archive zlibex
上傳時(shí)間： 2015-04-30
上傳用戶：縹緲
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