This design uses Common-Emitter Amplifier (Class A) with 2N3904 Bipolar Junction Transistor. Use “Voltage Divider Biasing” to reduce the effects of varying β (= ic / ib) (by holding the Base voltage constant) Base Voltage (Vb) = Vcc * [R2 / (R1 + R2)] Use Coupling Capacitors to separate the AC signals from the DC biasing voltage (which only pass AC signals and block any DC component). Use Bypass Capacitor to maintain the Q-point stability. To determine the value of each component, first set Q-point close to the Center position of the load line. (RL is the resistance of the speaker.)
上传时间： 2020-11-27
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Multisim官方示例Multisim仿真例程基础电路范例135例合集:Chapter 1 - RLC CircuitsChapter 2 - DiodesChapter 3 - TransistorsChapter 4 - AmplifiersChapter 5 - OpampsChapter 6 - FiltersChapter 7 - Miscellaneous CircuitsFundamental Circuits.pdf004 Parallel DC Circuits.ms10005 Series-Parrallel DC Circuit.ms10006 Current Analysis.ms10007 Millmans Theorem 1.ms10008 Millmans Theorem 2.ms10009 Kirchhoff's Current Law.ms10010 Thevenin's Theorem.ms10011 Superposition Principle.ms10012 Nortons Theorem and Source Conversion.ms10013 AC Voltage Measurement.ms10014 Frequency Response of the Series RL Network.ms10015 RL High and Low Pass Filter.ms10016 Frequency Response of the Series RC Network.ms10017 RC High and Low Pass Filter.ms10019 Center-Tapped Full-Wave Rectifier.ms10020 Bridge Rectifier.ms10021 Capacitor-Input Rectifier Filter.ms10022 Diode Clipper (Limiter).ms10023 Diode Clipper.ms10024 Diode Clamper (DC Restorer).ms10025 Diode Voltage Doubler.ms10026 Zener Diode and Voltage Regulation 1.ms10027 Zener Diode and Voltage Regulation 2.ms10028 Zener Diode and Voltage Regulation 3.ms10105 TTL Inverter.ms10107 TTL Gate.ms10109 OR Gate Circuit.ms10111 Over-Damp Circuit.ms10113 Critical-Damp Circuit.ms10115 Series RLC Circuit 1.ms10117 Clapp Oscillator.ms10119 Differential Amplifier 1.ms10121 Differential Amplifier in Common Mode.ms10123 LC Oscillator with Unity Gain Buffer.ms10125 Notch Filter.ms10127 PNP Differential Pair.ms10129 Crossover Network.ms10131 Second-Order High-Pass Chebyshev Filter.ms10133 Third-Order High-Pass Chebyshev Filter.ms10135 Fifth-Order High-Pass Filter.ms10
标签： multisim
上传时间： 2021-10-27
上传用户：trh505
It all started rather innocuously. I walked into Dr GT Murthy’s office one fine day, andchanged my life. “Doc” was then the General Manager, Central R&D, of a very largeelectrical company headquartered in Bombay. In his new state-of-the-art electronics Center,he had hand-picked some of India’s best engineers (over a hundred already) ever assembledunder one roof. Luckily, he too was originally a Physicist, and that certainly helped me gainsome empathy. Nowadays he is in retirement, but I will always remember him as athoroughly fair, honest and facts-oriented person, who led by example. There were severalthings I absorbed from him that are very much part of my basic engineering persona today.You can certainly look upon this book as an extension of what Doc started many years agoin India … because that’s what it really is! I certainly wouldn’t be here today if I hadn’t metDoc. And in fact, several of the brash, high-flying managers I’ve met in recent years,desperately need some sort of crash course in technology and human values from Doc!
标签： 开关电源
上传时间： 2021-11-23
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温度控制如今已成为当代社会研究的热点之一,而温度检测在现代设备参数检测中也是一项极其重要的技术,应用十分广泛。与传统的测温方法相比,红外测温方法具有时间短、精度高、使用简单方便等优点。本文以环境温度为被测对象,设计了以STC89C52单片机为控制中心的红外测温装置,能够实现对目标温度的实时采集、处理、显示和报警等功能。本设计主要是由STC89C52单片机、红外测温传感器、LCD1602液晶显示器、按键和蜂鸣器等部分组成,采用非接触的方式对目标温度进行实时检测。Temperature control has become one of the hotspots in contemporary social research,and temperature detection is an extremely important technology in modern equipment parameter detection.Compared with traditional method,the infrared temperature measuring method has advantages of short time,high precision and convenient operation,etc.This paper consider environment temperature as research objects and designs an infrared temperature measuring device which employs the STC89C52singlechipas-control Center,and it can realize timely collection,processing,display and alarm function of the target temperature.The design is mainly composed of STC89C52 singlechip,infrared temperature sensor,LCD1602monitor,keys and buzzer,etc.This design detects the target temperature by non-contact method.
上传时间： 2022-03-27
上传用户：jiabin
本文首次设计并验证了基于macom三合一芯片设计的光模块电路,该电路旨在提供一种满足SFF-8472中规定的数字诊断功能的低成本SFP+模块。电路采用激光器驱动、限幅放大器、控制器以及时钟恢复单元集成的单芯片,在保证高精度数字诊断功能基础上,实现了低成本高可靠的特点。该电路在光接收接口组件与激光器驱动和限幅放大器单元的限幅放大器部分之间接入滤波器来提高模块的灵敏度及信号质量。在控制器单元的数字电位器的引脚上采用外加电阻的方式避免出现上电不发光的故障问题。该研究结果为下一代SFP-DD光模块设计与开发工作,奠定了一定的理论与实践基础。This paper designs and validates the optical module circuit based on the MACOM Trinity chip for the first time.This circuit aims to provide a low-cost SFP module which meets the digital diagnosis function specified in SFF-8472.The circuit uses a single chip integrated with laser driver,limiting amplifier,controller and clock recovery unit.On the basis of ensuring high precision digital diagnosis function,it achieves the characteristics of low cost and high reliability.The circuit connects a filter between the optical receiving interface module and the limiting amplifier part of the laser driver and limiting amplifier unit to improve the sensitivity and signal quality of the module.The pin of the digital potentiometer in the controller unit is equipped with an external resistance to avoid the problem of power failure.The research results lay a theoretical and practical foundation for optical module design in high-speed data Center.
上传时间： 2022-04-03
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EPLAN EEC ONE的中文版手册，属于eplan的高端应用。
标签： eplan
上传时间： 2022-05-05
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說明：1，测试交流电源（Test AC Power Supply）：A.中国（China）：AC 220V+/-2%50Hz+/-2%B.美国（United States of America）：AC 120V+/-2%60Hz+/-2%。C.英国（Britain）：AC 240V+/-2%50Hz+/-2%D.欧洲（Europe）：AC 230V+/-2%50Hz+/-2%E.日本（Japan）：AC 100V+/-2%60Hz+/-2%F.墨西哥（Mexico）：AC 127V+/-2%60Hz+/-2%2，测试温度条件（Test Temperature Conditions）：25℃+/-2℃。3，测试以右声道为准（Standard Test Use Right Channell）4，信号由AUX插座输入（Signal From AUX Jack Input）。5，测试以音量最大，音调和平衡在中央位置（电子音调在正常状态）。（Test Volume Setup Max，Equalizer And Balance Setup Center）。6，标准輸出（Standard Output）：A.输入1 KHz频率信号（Input 1 KHz Frequency Signal）B.左右声道输入信号测试右声道（L&R Input Signal Test Use R Channel）C.额定输出功率満（Rating Output Power Full）10 W，标准输出定为1w.（Rating Output Power Full 10 w，Standard Output Setup 1 W）D.额定输出功率1W到10w，标准输出定为500 mW（Rating Output Power 1 W To 10 W，Standard Output Setup 500 mW）E.额定输出功率小于1w，标准输出定为50 mW（Rating Output Power Not Full 1 W，Standard Output Setup 50 mW）F.标准輸出电压以V-VPR为准（Standard Output Voltage Use V-V/PR）。G.V-V/PR中P为额定输出功率，R为喇叭标称阻抗。
标签： 音响功放
上传时间： 2022-06-18
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电力系统是一个大规模、时变的复杂系统，在国民经济中有非常重要的作用。电力系统数字仿真已成为电力系统研究、规划、运行、设计等各个方面不可或缺的工具，特别是电力系统新技术的开发研究、新装置的设计、参数的确定更是需要通过仿真来确认。目前常用的电力系统仿真软件有：（1）邦纳维尔电力局（Bonneville Power Administration，BPA）开发的BPA程序和EMTP（Electromagnetic Transients Program）程序；（2）曼尼托巴高压直流输电研究中心（Manitoba HVDC Research Center）开发的PSCAD/EMTDC（Power System Computer Aided Design/Electromagnetic Transients Program including Direct Current）程序；（3）德国西门子公司研制的电力系统仿真软件NETOMAC（Network Torsion Machine Control）；（4）中国电力科学研究院开发的电力系统分析综合程序PSASP（Power System Analysis Software Package）；（5）MathWorks公司开发的科学与工程计算软件MATLAB（Matrix Laboratory，矩阵实验室）。
上传时间： 2022-07-27
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VIP专区-嵌入式/单片机编程源码精选合集系列（132）资源包含以下内容：1. siemens PLC Prodave 通讯测试.2. 嵌入式系统下IC卡读写的源码.3. 数字音乐盒的完整毕业论文（无意中发现的） 课程设计题目：数字音乐盒.4. 单片机程序 51频率计 电子琴 电子钟程序 按键显示程序最终成功.5. C和C++嵌入式系統編程,一本很嵌入式编程很不错的书..6. 一本很好的介绍yaffs文件系统的书籍 一本很好的介绍yaffs文件系统的书籍.7. 一份不错的介绍linux 字符设备驱动的文档.8. 工程源文件.9. 用holtek3000开发环境编写的单片机C语言键盘扫描程序．.10. 8255A芯片的中文资料（8255中文资料）.11. mmc_sd_memory_card_driver_sample_project_files spi接口的sd card driver 示例.12. 单片机驱动PS2键盘的c程序 希望对大家有用.13. a voice guide client ,it is the second part of voice guide Center.14. msc map program to control client of tools,use for map guide.15. C#开发win ce代码程序.16. 2个Ds18b20温度显示电路,12Mhz晶振.17. 5分频cpld原理图实现.18. 可实现对ST公司的SPI flash的控制.19. VB实现的文字图片原理,VB实现的文字图片原理.20. 嵌入式C精华, 嵌入式C精华,嵌入式C精华.21. 一个简单的电梯控制系统,主要实现一个八层楼的电梯控制..22. 这是自己做的一个gui 及供初学者参考 如有问题可以一起讨论 可发到我的邮箱里 完成的功能就是 对uicontrol的应用.23. 触摸屏校正算法,主流嵌入式设计都使用此算法,个人觉得经典..24. 基于51单片机的源码,内有液晶显示(IIC)接口,还实现串口和定时操作等功能..25. 链接器和加载器,这是一本全面介绍我们编写的程序是如何被链接的,个人觉得做嵌入式开发的软件工程师必备的一本书..26. 使用Embest IDE for ARM 开发环境及ARM 软件模拟器； 通过实验掌握简单ARM 汇编指令的使用方法。.27. AD7714是一款24位高速AD转换芯片.28. Cortex-M3是首款基于ARMv7-M架构的处理器.29. 刚刚学习ne2000驱动开发.30. ATMEL的芯片资料pdf文档.31. GPS卫星定位模块的驱动程序.32. 还可以.33. 基于CAN总线的分布式三维步进电机控制系统.34. 自己做的交通灯~~~用c编写的.35. 基于PCI总线的高速数据传输.36. [转载]嵌入到系统进程中,检查并报告主板型号.37. Freescale_071112_1公司内部的器件资料.38. 关于2410开发板的u-boot的说明.39. CX1-22R 可编程控制器(简称 CX1)是 22 路 I/O 一体化小型可编程控制器（PLC）.40. PIC汇编各个时间延时小程序.
标签： SD卡
上传时间： 2013-04-15
上传用户：eeworm
Proteus软件是英国Lab Center Electronics公司出版的EDA工具软件（该软件中国总代理为广州风标电子技术有限公司）。它不仅具有其它EDA工具软件的仿真功能，还能仿真单片机及外围器件。它是目前比较好的仿真单片机及外围器件的工具。
上传时间： 2013-07-01
上传用户：eeworm
