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iv_4_20ma
介绍如何简单可靠而方便测量 4～20mA 信号的文章。许多仪器仪表在远距离传送信号时，都有可能采取 4～20mA 的方式进行传送。本文对使用运算放大器或者不用运算放大器的场合都有介绍。给出了接口电阻的计算方法以及调整4mA＝零点，20mA＝满度的详细说明。并附有局部连接的原理图。(How simple, reliable and convenient measurement of 4 ~ 20mA signal article. Many instruments in the long-distance signal transmission, may take 4 ~ 20mA way transmission. In this paper, an operational amplifier or op amp do not have a description occasions. Shows the calculation of the interface resistance and adjust the 4mA = zero, 20mA = full scale details. Local connections together with the schematic.)
- 2010-11-15 05:16:51下载
- 积分：1
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pulse-measurement
这是基于STC89C52编程开发的脉搏检测器，里面包含PCB原理图，程序代码和一篇参考论文。(This is based programming development STC89C52 pulse detector, which contains PCB schematics, program code and a reference papers.)
- 2013-12-13 20:40:50下载
- 积分：1
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temperature-detection-system
六路炉温检测系统，含有技术报告，原理图、pcb，系统源程序，上位机源程序。(Her temperature detection system, contain a technical report, schematic and PCB, system source code, source program of the host computer is designed.)
- 2015-01-31 17:47:44下载
- 积分：1
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Photosensitive-resistance-test
利用adc，将光敏电阻的值数字化，并显示在数码管上(Use adc, the photosensitive resistor values digitized and displayed on a digital)
- 2014-05-27 14:15:19下载
- 积分：1
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adc采样
数模转换，基于AVR16单片机的程序，基础入门(Digital analog conversion)
- 2018-07-08 21:08:09下载
- 积分：1
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01GprsMultiLink
说明： GPRS多路穿透文件，实现多路链接。性能稳定，工厂可以使用(GPRS Multiplex Penetration File)
- 2020-06-23 08:00:01下载
- 积分：1
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crc_new
实现HDLC链路层的校验模块程序，在ads和mipchipc30上都调试成功。(HDLC link-layer implementation of the calibration module procedures, mipchipc30 in ads and on the success of all debugging.)
- 2009-03-19 21:52:50下载
- 积分：1
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多点粮仓测温
实现仓库多点测温，使用18B20多点测温(Multi point granary temperature measurement)
- 2018-08-07 15:33:26下载
- 积分：1
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12864LLY
12864液晶显示程序 带中文字库 可以画图 写汉字 (12864 LCD process)
- 2009-04-04 20:04:32下载
- 积分：1
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SVGdianziyueqi
HTM5 SVG电子打击乐器音效代码，鼠标点击操作，输出电子鼓音效，也可进行键盘操作。(HTM5 SVG electronic percussion sound code, mouse clicks, the output of electronic drum sound, but also for keyboard operation.)
- 2016-06-26 17:37:48下载
- 积分：1
