1 / 6

数字万用表的改装

功能 / 量程选择. R-U 转换. A/D 转换. 显示器. 显示逻辑. 输 入. I-U 转换. U-U 转换. 数字万用表的改装. 1. 数字万用表的组成原理. 直流数字电压表. 波段选择开关. R 1. R 2. R 3. U g. U 1. U 2. V. COM. 图 4.11-2 数字直流电压表原理电路. 2 ．直流电压档扩程. 直流数字电压表. R 1. R 2. R 3. I 1. I 2. I 3. 波段选择开关. mA. COM. 图 4.11-3 数字直流电流表原理电路.

tirzah
Download Presentation

数字万用表的改装

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 功能/ 量程选择 R-U 转换 A/D 转换 显示器 显示逻辑 输 入 I-U 转换 U-U 转换 数字万用表的改装 1.数字万用表的组成原理

  2. 直流数字电压表 波段选择开关 R1 R2 R3 Ug U1 U2 V COM 图4.11-2 数字直流电压表原理电路 2．直流电压档扩程

  3. 直流数字电压表 R1 R2 R3 I1 I2 I3 波段选择开关 mA COM 图4.11-3 数字直流电流表原理电路 3．直流电流档扩程

  4. 实验内容 1.以数字万用表的直流电压200mV量程(其内阻大于10M,可视为无穷大)为基本量程,组装量程分别为2V和20V的直流数字电压表,要求直流电压表的内阻为100k. (1)画出电路图并计算电路参数. (2)设计校准电路并进行校准. 2.将数字万用表的直流电压200mV量程(其内阻大于10M,可视为无穷大)组装量程分别为200A,2mA和20mA的直流数字电流表.(选做) (1)画出电路图并计算电路参数. (2)设计校准电路并进行校准.

More Related