电子设计自动化EWB实践指导书

EWB实践指导书1目录第一章概论····································································错误!未定义书签。1.1ElectronicsWorkbench简介·········································错误!未定义书签。1.2EWB的特点·································································错误!未定义书签。第二章基本界面及菜单使用·······················································错误!未定义书签。2.1EWB的主窗口······························································错误!未定义书签。2.2EWB基本工具栏···························································错误!未定义书签。2.3EWB菜单及使用方法·····················································错误!未定义书签。2.3.1文件菜单File·······················································错误!未定义书签。2.3.2编辑菜单Edit·······················································错误!未定义书签。2.3.3电路菜单Circuit···················································错误!未定义书签。2.3.4分析菜单Analysis·················································错误!未定义书签。2.3.5窗口菜单Window··················································错误!未定义书签。2.3.6帮助菜单Help······················································错误!未定义书签。第三章EWB的基本操作方法·····················································错误!未定义书签。3.1元器件的操作使用·························································错误!未定义书签。3.2元器件的参数设置·························································错误!未定义书签。3.3导线的编辑操作····························································错误!未定义书签。3.4节点的使用··································································错误!未定义书签。3.5测试仪器的使用····························································错误!未定义书签。3.6电路的激活··································································错误!未定义书签。3.7实验结果的描述····························································错误!未定义书签。3.8仿真实验范例·······························································错误!未定义书签。第四章EWB的元器件库···························································错误!未定义书签。4.1信号源库（Source）······················································错误!未定义书签。4.2基本元器件库（Basic）··················································错误!未定义书签。4.3二极管库(Diode)····························································错误!未定义书签。4.4三极管库（Transistors）·················································错误!未定义书签。4.5模拟集成元器件库（AnalogICs）和混合集成元器件库（MixedICs）错误!未定义书签。4.5数字集成元器件库(DiditalICs)和逻辑门元器件库(LogicGates)错误!未定义书签。4.6数字元器件库（Digital）和指示元器件库（Indicators）········错误!未定义书签。第五章EWB的测试仪器···························································错误!未定义书签。5.1数字万用表（Multimeter）·············································错误!未定义书签。5.2函数信号发生器（FunctionGenerator）····························错误!未定义书签。5.3双踪示波器（Oscilloscope）············································错误!未定义书签。5.4波特测试仪（BodePlotter）············································错误!未定义书签。5.5字信号发生器（WordGenerator）····································错误!未定义书签。5.6逻辑分析仪（LogicAnalyzer）·········································错误!未定义书签。5.7逻辑转换仪（LogicConverter）·······································错误!未定义书签。5.8几种常用的测试、指示仪器·············································错误!未定义书签。5.9示范···········································································错误!未定义书签。第六章EWB的基本分析方法·····················································错误!未定义书签。EWB实践指导书26.1直流（静态）工作点分析（DCOperatingPointAnalysis）·····错误!未定义书签。6.2交流频率分析（ACFrequencyAnalysis）···························错误!未定义书签。6.3瞬态分析（TransientAnalysis）·······································错误!未定义书签。6.4傅立叶分析（FourierAnalysis）·······································错误!未定义书签。6.5示范···········································································错误!未定义书签。第七章习题······································································错误!未定义书签。参考书··············································································错误!未定义书签。EWB实践指导书1第一章概论1.1ElectronicsWorkbench简介从事电子产品设计、开发等工作人员，经常要求对所设计的电路进行实物模拟和调试。其目的，一方面是为了验证所设计的电路是否能达到设计要求指标，另一方面，通过改变电路中元器件的参数，使整个电路性能达到最佳值。以往的电路设计模拟，常常是制作一块模拟试验板，在这块板上用实际元器件进行试验和调试。取得数据后，再来修正原设计电路参数，直至达到设计提出的要求。但由于受工作场地、仪器设备和元器件品种、数量的限制，有些试验往往无法及时完成。这样既影响工作的顺利进行，又束缚了设计人员。EWB帮忙解决了难题。“虚拟电子工作平台”（ElectronicsWorkbench），简称EWB，是加拿大“InteractiveImageTechnologies”公司设计推出的电子电路仿真分析、设计软件。与其它电路仿真软件相比较，EWB具有界面直观、操作方便、采用图形方式创建电路等优点，构造电路、调用元器件和测试仪器等都可以直接从窗口图形中调出，可以对电子元器件进行一定程度的非线性仿真，不仅测试仪器的图形与实物相似，而且测试结果与实际调试基本相似。使用虚拟测试仪器对电路进行仿真实验如同置身于实验室使用真实仪器测试电路，既解决了购买大量元器件和高档仪器的难处，又避免了仪器损坏等不利因素。该软件直观的电路图和仿真分析结果的显示形式非常适合于电子类课程实验教学环节，是一种非常好的电子技术实训工具。可以弥补实验仪器、元件少的不足及避免仪器、元器件的损坏。通过电路仿真，可以帮助学生更快、更好地掌握课程讲述的内容，熟悉常用电子仪器的测量方法，掌握电路的性能。进一步培养学生的综合分析能力、排除故障能力和开发、创新能力。1.2EWB的特点EWB最明显的特点是：（1）界面直观。绘制的电路图需要的元器件、测试仪器都是以图标方式出现，而且仪器的操作开关、按钮同实际非常相似，很容易学会和使用。（2）易学易用。具有一般电子技术基础知识的人员，只需几个小时就可以掌握EWB的基本操作。（3）仿真的手段和实际相符，仪器和元器件的选用和实际情形非常相似。可以通过对电路的仿真，既掌握电路的性能，又熟悉仪器的正确的使用方法。（4）具有齐全丰富和可扩充的元器件库。提供了数千种元器件供选用，不仅提供了元器件的理想值，而且有的元器件还提供了实际厂家的元器件模型。（5）具有完整的混合模拟与数字信号模拟的功能。可任意地在系统中集成数字及模拟元器件，会自动地进行信号转换。测试具有即时的显示功能。（6）在对电路进行仿真的同时，还可以存储实验数据、波形、元器件清单、工作状态等，并可打印输出。（7）提供了各种分析手段。有静态分析、动态分析、时域分析、频域分析、噪声分析、失真分析、离散傅立叶分析、温度分析等各种分析方法。（8）可人为的设置短路、开路、漏电等故障分析。（9）与SPICE软件兼容，可相互转换。EWB产生的电路文件还可以直接输出至常见的Protel、Tango、Orcad等印制电路板排版软件。（10）提高了电子设计工作的效率。EWB实践指导书2第二章基本界面及菜单使用2.1EWB的主窗口启动EWB软件图标后，可见到EWB5.12的电路工作主窗口，如图2-1所示。图2-1电路工作主窗口从图2-1