Abstract: Many modern industrial, medical, and commercial applications require temperature measurements in the extended temperature rangewith accuracies of ±0.3°C or better, performed with reasonable cost and often with low power consumption. This article explains how platinumresistance temperature detectors (PRTDs) can perform measurements over wide temperature ranges of -200°C to +850°C, with absolute accuracyand repeatability better than ±0.3°C, when used with modern processors capable of resolving nonlinear mathematical equation quickly and costeffectively. This article is the second installment of a series on PRTDs. For the first installment, please read application note 4875, "High-Accuracy Temperature Measurements Call for Platinum Resistance Temperature Detectors (PRTDs) and Precision Delta-Sigma ADCs."
上传时间： 2013-11-06
上传用户：WMC_geophy
基于通用集成运算放大器，利用MASON公式设计了一个多功能二阶通用滤波器，能同时或分别实现低通、高通和带通滤波，也能设计成一个正交振荡器。电路的极点频率和品质因数能够独立、精确地调节。电路使用4个集成运放、2个电容和11个电阻，所有集成运放的反相端虚地。利用计算机仿真电路的通用滤波功能、极点频率和品质因数的独立控制和正交正弦振荡，从而证明该滤波器正确有效。 Abstract: A new multifunctional second-order filter based on OPs was presented by MASON formula. Functions， such as high-pass， band-pass， low-pass filtering， can be realized respectively and simultaneously， and can become a quadrature oscillator by modifying resistance ratio. Its pole angular frequency and quality factor can be tuned accurately and independently. The circuit presented contains four OPs， two capacitors， and eleven resistances， and inverting input of all OPs is virtual ground. Its general filtering， the independent control of pole frequency and quality factor and quadrature sinusoidal oscillation were simulated by computer， and the result shows that the presented circuit is valid and effective.
上传时间： 2013-10-09
上传用户：13788529953
学习资料，关于C++的，Addison.Wesley写的Effective.&.More.Effective.C
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上传时间： 2014-01-11
上传用户：sjyy1001
亚马逊网上书店、巴诺书店最佳畅销书《最后期限》 汤姆·迪马可（Tom DeMarco）是大西洋系统行会（www.atlsysguild.com）的负责人之一，同时他也是多塞特家族出版社的三本畅销书（《人件》（将于今年4月在清华大学出版社引进出版），与蒂姆·利斯特合著的《软件艺术的状态》（Software State-of-the-Art），以及《为何软件开销那么大？》（Why Does Software Cost So Much?）和一套基础培训录像（与蒂姆·利斯特合作的《高产团队》）的作者。
标签： atlsysguild DeMarco Tom www
上传时间： 2013-12-24
上传用户：ZJX5201314
制作本书的目的是为了方便大家的阅读。转载时请保持本电子书的完整性。 前言、条款2、16、21、44根据从Addison-Wesley出版社下载的开放条款翻译。条款26、27、28、45根据从Scott Meyers的网站下载的《Three Guidelines for Effective Iterator Usage》一文翻译。条款43根据从C/C++ Users Journal网站下载的《STL Algorithms vs. Hand-Written Loops》一文翻译，条款45根据从C/C++ Users Journal网站下载的《Distinguishing STL Search Algorithms》一文翻译。其余部分根据epubcn放出的电子书制作。
标签： Addison-Wesley 家 保持
上传时间： 2015-04-12
上传用户：jing911003
prolog 找路例子程序： === === === === === === Part 1-Adding connections Part 2-Simple Path example | ?- path1(a,b,P,T). will produce the response: T = 15 P = [a,b] ? Part 3 - Non-repeating path As an example, the query: ?- path2(a,h,P,T). will succeed and may produce the bindings: P = [a,depot,b,d,e,f,h] T = 155 Part 4 - Generating a path below a cost threshold As an example, the query: ?- path_below_cost(a,[a,b,c,d,e,f,g,h],RS,300). returns: RS = [a,b,depot,c,d,e,g,f,h] ? RS = [a,c,depot,b,d,e,g,f,h] ? no ==================================
标签： Part connections example prolog
上传时间： 2015-04-24
上传用户：ljt101007
Software Testing, Second Edition provides practical insight into the world of software testing and quality assurance. Learn how to find problems in any computer program, how to plan an effective test approach and how to tell when software is ready for release. Updated from the previous edition in 2000 to include a chapter that specifically deals with testing software for security bugs, the processes and techniques used throughout the book are timeless. This book is an excellent investment if you want to better understand what your Software Test team does or you want to write better software.
标签： practical Software provides software
上传时间： 2015-04-30
上传用户：bjgaofei
有效使用STL迭代器ITERATOR的三条基本原则，是C/C++ Users Journal摘录的Effective STL的三个独立条款
上传时间： 2014-01-02
上传用户：ardager
Linphone is a web phone: it let you phone to your friends anywhere in the whole world, freely, simply by using the internet. The cost of the phone call is the cost that you spend connected to the internet.
标签： phone Linphone anywhere friends
上传时间： 2015-05-04
上传用户：牛布牛
自制51编程器 I have build my own programmer. This device can program the AT89C51 and works with it. So it can easily be adapted to programming other devices by itself. The Atmel Flash devices are ideal for developing, since they can be reprogrammed easy, often and fast. You need only 1 or 2 devices in low cost plastic case for developing. In contrast you need 10 or more high cost windowed devices if you must develop with EPROM devices (e.g. Phillips 87C751).
标签： programmer program device build
上传时间： 2015-05-11
上传用户：sdq_123
