1、摘摘 要要 万用表是一种多功能、多量程的便携式电工仪表,一般的万用表可以测量直流电 流、交直流电压和电阻，有些万用表还可测量电容、功率、晶体管共射极直流放大 系数 hFE 等。MF47 型万用表具有 26 个基本量程和电平、电容、电感、晶体管直流参 数等 7 个附加参考量程，是一种量限多、分档细、灵敏度高、体形轻巧、性能稳定、 过载保护可靠、读数清晰、使用方便的新型万用表。 万用表是电工必备的仪表之一，每个电气工作者都应该熟练掌握其工作原理及 使用方法。通过本次万用表的设计，要求了解万用表的工作原理，掌握锡焊技术的 工艺要领及万用表的使用与调试方法。 关键词关键词：万用表：万用表，万用表的原理
2、，万用表的原理，电路设计电路设计，电路图，万用表的组成结构，电路图，万用表的组成结构 Take toTake to A multimeter is a multifunctional, multiple range portable electrical instruments, general multimeter can measure DC current, DC voltage and resistance, some multimeter can also measure capacitance, power transistor, common-emitter d-c curren
3、t amplification coefficient hFE. MF47 multimeter has 26 basic range and level, capacitance, inductance, transistor DC parameter and7 additional reference range, is a kind of limit, grading fine, high sensitivity, light body shape, stable performance, reliable overload protection, clear reading, conv
4、enient novel multimeter. The multimeter is one of the necessary instrumentation electrician, each of the electrical workers should master the principle and method of use. Through this multimeter design, demand to know the multimeter working principle, grasp the soldering technology essentials and the use of a multimeter and debugging method. Key words: multimeter, multimeter principle, circuit design,Key words: multimeter, multimeter principle, circuit design, circuit diagram, multimeter st
