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摘要: 不同频段的RFID产品会有不同的特性,本文详细介绍了无源的感应器在不同工作频率产品的特性以及主要的应用。目前定义RFID产品的工作频率有低频、高频和甚高频的频率范围内的符合不同标准的不同的产品,而且不同频段的RFID产品会有不同的特性。其中感应器有无源和有源两种方式,下面详细介绍无源的感应器在不同工...阅读全文
posted @ 2015-09-24 08:58 carprog 阅读(1626) 评论(0) 编辑
摘要: RFID读写器的工作原理RFID的数据采集以读写器为主导,RFID读写器是一种通过无线通信,实现对标签识别和内存数据的读出和写入操作的装置。读写器又称为阅读器或读头(Reader)、查询器(Interrogator)、读出装置(Reading Device)、扫描器(Scanner)、通信器(Com...阅读全文
posted @ 2015-09-22 21:04 carprog 阅读(3684) 评论(0) 编辑
摘要: Transistor Tutorial SummaryTransistor Tutorial SummaryBipolar Junction Transistor Tutorial We can summarise this transistors tutorial section as follo...阅读全文
posted @ 2015-09-22 12:07 carprog 阅读(2230) 评论(0) 编辑
摘要: Cs5171: Tracking Boost RegulatorAdding a current mirror circuit to a typical boost circuit allows the user to select the amount of boost voltageand en...阅读全文
posted @ 2015-09-21 22:23 carprog 阅读(117) 评论(0) 编辑
摘要: 编码器精度与分辨率的区别对于传感器的分辨率与精度的理解,可以拿千分尺为例,分辨率代表千分尺最多可以读到小数点后几位,但精度还与尺子的加工精度,测量方法有关系。同样的,在旋转编码器的使用中,分辨率与精度是完全不同的两个概念。编码器的分辨率,是指编码器可读取并输出的最小角度变化,对应的参数有:每转刻线数...阅读全文
posted @ 2015-09-21 21:51 carprog 阅读(1219) 评论(0) 编辑
摘要: Linear Actuator - PID ControlIntroductionThis application guide is designed to explain the basics of PID control and how to implement a basic control ...阅读全文
posted @ 2015-09-21 17:54 carprog 阅读(198) 评论(0) 编辑
摘要: 调节/测量放大电路电路图:PID控制电路图如图是PlD控制电路,即比例(P)、积分(I)、微分(D)控制电路。A1构成的比例电路与环路增益有关,调节RP1,可使反相器的增益在0·5一∞范围内变化;A2是积分电路,积分时间常数可在22一426S范围内变化;A3是微分电路,时间常数由Cl(Rl+R(RP...阅读全文
posted @ 2015-09-21 17:41 carprog 阅读(539) 评论(0) 编辑
摘要: PID Controller AlgorithmsController manufacturers arrange the Proportional, Integral and Derivative modes into three different controller algorithms o...阅读全文
posted @ 2015-09-21 17:16 carprog 阅读(264) 评论(0) 编辑
摘要: Table of ContentsPractical Process ControlProven Methods and Best Practices for Automatic PID ControlI. Modern Control is Based on Process Dynamic Beh...阅读全文
posted @ 2015-09-21 17:06 carprog 阅读(377) 评论(0) 编辑
摘要: 形象解释PID算法小明接到这样一个任务:有一个水缸点漏水(而且漏水的速度还不一定固定不变),要求水面高度维持在某个位置,一旦发现水面高度低于要求位置,就要往水缸里加水。小明接到任务后就一直守在水缸旁边,时间长就觉得无聊,就跑到房里看小说了,每30分钟来检查一次水面高度。水漏得太快,每次小明来检查时,...阅读全文
posted @ 2015-09-21 09:38 carprog 阅读(4070) 评论(0) 编辑
摘要: In most cases the voltage that is induced in the coil can not exceed 6V, and it does not have risk to damage any of the elements. But sometimes, under...阅读全文
posted @ 2015-09-20 18:47 carprog 阅读(91) 评论(0) 编辑
摘要: IDA: What's new in 6.8HighlightsThis is mainly a maintenance release, so our focus was on fixing bugs. However, there are some improvements too:Suppor...阅读全文
posted @ 2015-09-20 11:38 carprog 阅读(2775) 评论(0) 编辑
摘要: J-Link GDB Server - SEGGERHilden, Germany– September 15th, 2011 – SEGGER Microcontroller today announced the freeavailability of the J-Link GDB-Server...阅读全文
posted @ 2015-09-20 10:08 carprog 阅读(488) 评论(0) 编辑
摘要: emSecureUse Digital Signatures to protect your productsemSecureis an RSA based software solution to authenticate digital assets. It can be used to sec...阅读全文
posted @ 2015-09-20 00:25 carprog 阅读(53) 评论(0) 编辑
摘要: 画时序图工具TimingDesigner 9.2 安装指导先上文件下载链接:http://bbs.eetop.cn/viewthread.php?tid=250446&;highlight=timing%2Bde%24igner安装、破解方法:一、安装1)解压“TimingDesigner_v9.2...阅读全文
posted @ 2015-09-19 20:49 carprog 阅读(580) 评论(0) 编辑
摘要: https://zh.wikipedia.org/wiki/%E5%88%86%E8%B2%9D分贝(decibel)是量度两个相同单位之数量比例的单位,主要用于度量声音强度,常用dB表示。“分”(deci-)指十分之一,个位是“贝”或“贝尔”(bel),但一般只采用分贝。分贝(dB)是十分之一贝尔...阅读全文
posted @ 2015-09-19 17:43 carprog 阅读(374) 评论(0) 编辑
摘要: how determine the RC time constant in PWM digital to analog low-pass filter?I 'm looking for the best RC time constant and its reason in a PWM to conv...阅读全文
posted @ 2015-09-19 16:52 carprog 阅读(201) 评论(0) 编辑
摘要: http://e2e.ti.com/blogs_/b/analogwire/archive/tags/DAC%2bEssentialsDAC Essentials: A new blog seriesAdigital-to-analog converter, or DAC, performs the...阅读全文
posted @ 2015-09-19 16:14 carprog 阅读(256) 评论(0) 编辑
摘要: http://www.cypress.com/knowledge-base-article/interfacing-sram-jtag-signals-using-voltage-level-shifter-kba81536As a best practice, avoid use of level...阅读全文
posted @ 2015-09-18 23:07 carprog 阅读(118) 评论(0) 编辑
摘要: 线性电压稳压器的分类线性电压稳压器是按照导通组件技术进行分类,包括:NPN-Darlington、NPN、PNP、PMOS 及 NMOS 稳压器。表 1 显示不同的类型以及一般最小电压差与静态电流特性。PNP 双极体晶体管一般被运用于低压降的应用,主要是因为这类晶体管很容易就能够达到低压降,然而,它...阅读全文
posted @ 2015-09-18 16:13 carprog 阅读(613) 评论(0) 编辑
摘要: DO-214is a standard that specifies a group ofsemiconductor packagesfor surface mounteddiodes.The standard includes multiple variants such asDO-214AA (...阅读全文
posted @ 2015-09-18 00:46 carprog 阅读(443) 评论(0) 编辑
摘要: After damaging the GPIO port on our raspberry pi while designing a new solar monitoring system we decided that it might be a good idea to build a buff...阅读全文
posted @ 2015-09-17 21:46 carprog 阅读(117) 评论(0) 编辑
摘要: The FT232H is the single channel version, the FT2232H is the dual-channel, and there is also anFT4232Hquad channel part.While these are all logically ...阅读全文
posted @ 2015-09-17 21:39 carprog 阅读(359) 评论(0) 编辑
摘要: TXS(开漏优化设计),如I2CTXB(上拉优化设计),如SPITXS0108has integrated pull-up resistors to save board space and cost in open-drain applications.The TXS0108 Does NOT n...阅读全文
posted @ 2015-09-17 21:05 carprog 阅读(288) 评论(0) 编辑
摘要: 是采样速率低于5Msps (每秒百万次采样)的中等至高分辨率应用的常见结构。SAR ADC的分辨率一般为8位至16位,具有低功耗、小尺寸等特点。这些特点使该类型ADC具有很宽的应用范围,例如便携/电池供电仪表、笔输入量化器、工业控制和数据/信号采集等。顾名思义,SAR ADC实质上是实现一种二进制搜...阅读全文
posted @ 2015-09-17 15:33 carprog 阅读(282) 评论(0) 编辑
摘要: ADC分类直接转换模拟数字转换器(Direct-conversion ADC),或称Flash模拟数字转换器(Flash ADC)循续渐近式模拟数字转换器(Successive approximation ADC)跃升-比较模拟数字转换器(Ramp-compare ADC)威尔金森模拟数字转换器(W...阅读全文
posted @ 2015-09-17 14:57 carprog 阅读(454) 评论(0) 编辑
摘要: Voltage Translation for Analog to Digital Interface孕龙逻辑分析仪 ZeroPlus Logic AnalyzerHow to modify analog output range of Arduino DueIn today'smicrocontr...阅读全文
posted @ 2015-09-17 12:43 carprog 阅读(89) 评论(0) 编辑
摘要: JTAG FinderFiguring out the JTAG Pinouts on a Device is usually the most time-consuming and frustrating processand Finding the pinouts for these ports...阅读全文
posted @ 2015-09-17 11:28 carprog 阅读(2030) 评论(0) 编辑
摘要: 希腊字母源自腓尼基字母。腓尼基字母只有辅音,从右向左写。希腊语的元音发达,希腊人增添了元音字母。因为希腊人的书写工具是蜡板,有时前一行从右向左写完后顺势就从左向右写,变成所谓“耕地”式书写,后来逐渐演变成全部从左向右写。字母的方向也颠倒了。罗马人引进希腊字母,略微改变变为拉丁字母,在世界广为流行。希...阅读全文
posted @ 2015-09-15 17:35 carprog 阅读(70) 评论(0) 编辑
摘要: E3 50% tolerance (no longer used)E6 20% tolerance (now seldom used)E12 10% toleranceE24 5% toleranceE48 2% toleranceE96 1% toleranceE192 0.5, 0.2...阅读全文
posted @ 2015-09-14 20:00 carprog 阅读(72) 评论(0) 编辑
摘要: RC 2nd Order Passive Low Pass FilterThe cut-off frequency of second order low pass filter is given asSecond order low pass filter -3dB frequency is gi...阅读全文
posted @ 2015-09-14 09:34 carprog 阅读(1354) 评论(0) 编辑
摘要: Figure 3-7 shows a block diagram of a DSP system,as the sampling theorem dictates it should be.Before encountering the analog-to-digital converter,the...阅读全文
posted @ 2015-09-14 01:07 carprog 阅读(215) 评论(0) 编辑
摘要: The Secret Mixed-Signal Life of PWM PeripheralsPulse-width modulation (PWM) peripherals have enjoyed a long association with microcontrollers and powe...阅读全文
posted @ 2015-09-14 01:01 carprog 阅读(200) 评论(0) 编辑
posted @ 2015-09-14 00:50 carprog 阅读(46) 评论(0) 编辑
摘要: Adding Digital control to Dual tracking LM317 / LM337 Bench supplyI've been working on my own idea for a digitally controlled power supply over the la...阅读全文
posted @ 2015-09-14 00:45 carprog 阅读(227) 评论(0) 编辑
摘要: i just finished this simple circuit and am very satisfied with the result. The output is very stable and extremely linear!just though id share as i di...阅读全文
posted @ 2015-09-14 00:35 carprog 阅读(139) 评论(0) 编辑
摘要: how to generate an analog output from a in-built pwm of Atmega 32AVR microcontrloller?you need a resistor, a capacitor and an opamp.opamp is not reall...阅读全文
posted @ 2015-09-14 00:34 carprog 阅读(236) 评论(0) 编辑
摘要: Voltage Translation for Analog to Digital Interface ADCHow to modify analog output range of Arduino DueArduinoDue does not have an analog output volta...阅读全文
posted @ 2015-09-14 00:26 carprog 阅读(67) 评论(0) 编辑
摘要: CMSIS-DAPV1V2阅读全文
posted @ 2015-09-13 18:39 carprog 阅读(458) 评论(0) 编辑
摘要: DESCRIPTIONThe DG449 is a dual supply single-pole/double-throw (SPDT) switches.On resistance is 38  and flatness is 2.6  max over the specified anal...阅读全文
posted @ 2015-09-13 13:35 carprog 阅读(344) 评论(0) 编辑
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