NI Multisim 11.0中数字万用表的使用

介绍了NI Multisim 11.0仿真软件,NI Multisim 11.0中数字万用表的种类、虚拟数字万用表和仿真安捷伦数字万用表的使用。     

电流计的两种全新用法

职高一年级学生可能没使用过电流计,但都已经会使用模拟式万用表了.学生在使用万用表的过程中,都会亲身体会到万用表的一个特点:在测量直流电流或电压时,万用表指针的偏转方向反映了被测电流或电压的方向,其偏转幅度的大小反映了被测电流或电压的大小.但大家都知道:万用表是不能测量反向电流或电压的,长时间接入反向电流或电压会烧坏表头.     

谈谈万用表的使用

万用表在我们的日常生活中用的比较广泛,很多人对万用表的使用很是模糊,本文就如何使用万用表谈一谈,希望对读者有点帮助。     

感性至理性至实践──“万用表”教学案例

〔案例说明〕这节课的教学目的是要让学生了解万用表的工作原理，掌握使用万用表测量电流、电压和电阻的基本方法，根据人类认识过程的普遍规律和职高学生的学习特点，我对教学作了如下安排：①展示万用表实物和教学用挂图，使学生对万用表有一个感性的了解；②使用万用表进行实际测量演示，让学生进一步加深对万用表的感性认识；③讲授万用表的工作原理，使学生在感性认识的基础上形成对万用表的理性认识；④让学生亲手进行测试操作，使学生对万用表的认识进一步深入和具体化，并由此掌握测试程序、测试方法。〔案例）一、认识万用表（展示…     

万用表的改进

万用表是无线电课外活动中常用的工具之一，常常由于使用错误而损坏。为此，我针对常见的错误使用万用表的情况，改进实验装置，起到了保护万用表的作用。常见错误之一：误用万用表的欧姆挡测电流或电压，损坏万用表。为防止出现这种情况，我在欧姆挡电路中的电源侧加了1个保险管，这样当使用不当而使大电流通过时，保险管会自动熔断，起到了保护万用表的作用。常见错误之二：用万用表测直流电流或电压时，红表笔应接高电位，黑表笔应接低电位，而接反易烧坏万用表。为防止出现这种情况，我在电路中加上了1个二极管，接反时，反向电压加在二…     

指针式万用表在大学物理实验中的具体应用

本文针对在大学物理实验过程中学生初次使用万用表出现的常见问题，分析了万用表引入的利弊与注意事项。     

提高电工学实验教材质量的尝试

提高实验课的教学质量,其中教材的质量是一个重要的方面。因此我在编写电工学实验教材中做了一些尝试。一、加强基本仪器仪表的使用,特别是重视万用表及电子示波器的使用。单独设置了万用表实验,而且在以后的实验中多次使用并适当扩大使用范围。例如,用万用表判别三相异步电动机定子绕组的始末端及电动机的极对     

《焊接与万用表装配》课程实施过程的优化

为了提高学生万用表装配的兴趣和使用万用表的能力,文章从实训内容、过程考核和过程激励等方面对原有实训过程进行优化,引导学生掌握对电路故障的诊断与排除,正确使用万用表。     

万用表的安装与检修

万用表的安装与检修是电专业的必修专业实训项目,教学目标是要求学生掌握万用表的结构及工作原理,万用表的使用方法及注意事项,万用表的元件检测,元件的焊接,调试技术,故障现象的分析及快速检修技能。     

正确使用万用表

万用表分为模拟式和数字式两种,现大多使用数字式,但两种表在使用中各有优、缺点.对于理工科学生而言,正确掌握万用表的使用是必不可少的一项技能.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

Western and Eastern culture differences in commercial field

The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

风的曲线

Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.