引言   传统的电网电流表一般都采用指针式表头,且都存在着测量范围小,稳定性差,精度低,表头指针指示不便于读数且误差大等缺点,已经不适应社会发展的需要。而随着智能化测控技术的迅速发展。以单片机为核心的数字电表的优势已十分明显。为此,本文采用单片机作为仪表的主控制器,并用Cirrus Logic公司的电能计量芯片负责采集数据,给出了一款性价比高、抗干扰能力强、测量精度很的电网电流表的设计方法。   1 系统工作原理   在工业生产和日常生活中,准确、实时的测量电网电流是必不可少的。本文采用开关稳压电源将220 V交流市电整流稳压为模拟、数字两路+5 V电源,来为整个电表电路供电。然后通过电
1
从零开始学c#,案例式教学。
2021-11-04 12:02:30 4.14MB 教程 c# 源码
1
C#程序设计基础源代码,可以参考代码,免去打码的辛苦
2021-11-04 11:07:41 11.65MB C#
1
讲述了电流和电压互感器的设计过程中的绕组、铁心计算,材料选型,试验要求等等
2021-11-04 10:53:55 6.7MB 电压和电流互感器
1
251002[机械设计基础] 天津大学考试题库及答案.pdf
2021-10-30 16:00:05 56KB
2020年春季学期课程作业机械设计基础第2次13630376-重庆大学网络教育学院-参考资料.pdf
2021-10-29 17:00:34 115KB
Program design foundation-c programming experiment Description: Experiment 1 and 2 are both electronic lab reports. The following 8 experiments are paper lab reports. Experiment 1 computer basic operation The experiment purpose Familiar with computer, can be able to operate correctly, turn off operation. Be familiar with the keyboard, grasp the input of all characters on the keyboard, master the correct fingering, can carry on the middle, English switch. To understand the operating system concept, master the basic operation of Windows XP, and can use the "control panel" to set up some parameters. You will know the function of "recycle station", learn the basic operation of files and folders. It learns to search or find relevant files or folders on a computer, and master the use of wildcards. The experiment content, Familiar with the computer, familiar with the keyboard, the translation of input in English. The essay learns to enter with the correct fingering, knowing the input of all characters on the keyboard. The "control panel" is used to modify the system time, desktop background, and mouse properties. To create a new folder on the desktop, the folder is named after the student's own name + class +. Use a text or Word document to write a self-introduction that contains no less than 300 words and is named and saved in the above folder. The group copies the above folder to 22. Experiment 2 common software basic operation The experiment purpose Understanding Word function, the basic operation of Word, including the header/footer setting, the column, the page setting, adding the base line etc. 2 learn to file save and open, the interval of print preview, paragraphs, the first character position change, etc., can insert images, forms, art words in the Word, special symbols, etc. (3) understand the function of Excel, master the basic operation of the Excel, including cell properties of several kinds of filling form, the ce 发表评论 Program design foundation-c progra
2021-10-28 18:58:17 9.08MB 英文书籍
1
即学即会 Java 程序设计基础视频教程(中文版).rar.txt
2021-10-26 18:03:09 141B java
1
ARM9嵌入式系统设计基础教程 电子课件_第8章 嵌入式系统
2021-10-26 11:50:40 206KB arm9 嵌入式系统设计 基础 教程
1
数字逻辑课件.rar
2021-10-24 20:37:59 23.74MB 数字逻辑 ppt课件 硬件设计基础
1