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mf47型万用表装配过程哪位了解？

mf47型万用表装配过程哪位了解？

浏览：40次 | 提问时间： 08-03 08:08

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倦困兽 08-03 08:09

实习项目名称：万用表的组装与调试一、实习目的1.了解数字式万用表的结构和工作原理。2.掌握常用*元件识别、判断的方法。3.学会数字式万用表的组装、校验和计算。4.了解仪表的测试精度及误差等基本要求。 5.通过万用表的安装和调试，掌握*元件和部件的安装测试技术。二、实习任务 1.根据万用表的工作原理了解万用表的参数。2.组装一块数字式万用表。3.校验数字式万用表，减小其误差。三、实习内容1.根据参考*，熟悉万用表工作原理，认识所用元件。2.领取工具箱及所需材料，参照实验方案，完成万用表组装及调试。3.将实现的作品，修订、美观，上交*并写出实验报告四、实习过程1.根据参考*，认识、熟悉万用表所用元件。2.利用测量工具对给定的电阻进行测量，记录其阻值，并将电阻分开放置。3.根据万用表工作原理，按照实验参考图，将元件按照不同的方法逐一焊接在PC板上方，并检查焊点，确保焊接无误。4.将元件多余的引脚去掉，美化PC板。5.安装开关、LCD显示屏、电池，合上底盖固定。装上表笔，完成万用表的组装。 6.对组装好的万用表进行测试，记录其精度，调试并缩小误差。希望我的回答您会满意！

旧事Remnsce 08-03 08:17

一、熟悉表盘上各符号的意义及各个旋钮和选择开关的主要作用。　　二、进行机械调零。　　三、根据被测量的种类及大小，选择转换开关的挡位及量程，找出对应的刻度线。　　四、选择表笔插孔的位置。　　五、测量电压、电流和电阻希望我的回答对您有所帮助。

Forbdden禁忌 08-03 08:26

简述万用表的电路工作原理万用表一般是用于检测电路中的电压、电流、电阻的仪表。早期称三用表，现在都称万用表。指针式万用表的显示部份是一个动圈式表头。在测量过程中，表头中的动圈在通过直流电流时，由于磁场的作用，与动圈相连的指针会随着动圈在表头刻度盘上一起偏转，从而显示各种测量结果。指针式万用表检测高电压电路的基本原理是用串联电阻分压的方式来扩展电压的量程；检测大电流电路的基本原理是用分流电阻分流的方式扩展电压的量程；在测量电阻时，万用表内的电池、表头、表内的标准电组及外部的被测电组都是串连的。当被测电阻为零时，表头偏传最大，当被测电阻不为零时，表头指针的偏转角度大小是随着被测电阻和表内的标准电阻的比值增大而偏转减小，我们用它的对应位置，检测电阻的阻值。单一检测电路都是比较简单的，但是要用同一只表头检测到多量程的电压、电流、电阻，就需要通过一个多点切换拨动开关来实现，这样就显得比较复杂了。庆幸的是，现在的万用表在电路设计上已经非常成熟，只要我们将所有的配件都按图装配上去，即可正常使用。希望对你有所帮助

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mf47型万用表装配过程哪位了解？