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split-range

  • Short-Range Wireless Communications

    Short-range communications is one of the most relevant as well as diversified fields of en- deavour in wireless communications. As such, it has been a subject of intense research and development worldwide, particularly in the last decade. There is no reason to believe that this trend will decline. On the contrary, the rapidly crystallizing vision of a hyper-connected world will certainly strengthen the role of short-range communications in the future. Concepts such as wireless social networks, Internet of things, car communications, home and office network- ing, wireless grids and personal communications heavily rely on short-range communications technology. 

    標簽: Communications Short-Range Wireless

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • Short-range+Wireless+Communication

    Developers, manufacturers and marketers of products incorporating short- range radio systems are experts in their fields—security, telemetry, medical care, to name a few. Often they add a wireless interface just to eliminate wires on an existing wired product. They may adapt a wireless subsystem, which is easy to integrate electrically into their system, only to find that the range is far short of what they expected, there are frequent false alarms, or it doesn’t work at all. It is for these adapters of wireless subsystems that this book is primarily intended.

    標簽: Communication Short-range Wireless

    上傳時間: 2020-06-01

    上傳用戶:shancjb

  • DS18B20中文資料

    FEATURES  Unique 1-Wire interface requires only one port pin for communication  Multidrop capability simplifies distributed temperature sensing applications  Requires no external components  Can be powered from data line. Power supply range is 3.0V to 5.5V  Zero standby power required  Measures temperatures from -55°C to +125°C. Fahrenheit equivalent is -67°F to +257°F  ±0.5°C accuracy from -10°C to +85°C  Thermometer resolution is programmable from 9 to 12 bits  Converts 12-bit temperature to digital word in 750 ms (max.)  User-definable, nonvolatile temperature alarm settings  Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)  Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

    標簽: 18B B20 DS 18

    上傳時間: 2013-08-04

    上傳用戶:CHENKAI

  • 期刊論文:超聲波測距在汽車倒車防撞系統中的應用

    ·關鍵詞:關鍵字: 超聲波發生器,超聲波換能器,測距   英文關鍵詞:Key words: Ultrasonic generator ; Ultrasonic wave transducer ;Range finder   簡  介: 摘要: 由于超聲波指向性強,能量消耗緩慢,在介質中傳播的距離較遠,因而超聲波經常用于距離的測量,如測距儀和物位測量儀

    標簽: 論文 汽車倒車 中的應用 超聲波測距

    上傳時間: 2013-06-14

    上傳用戶:wpt

  • US Navy VHDL Modelling Guide

      This document was developed under the Standard Hardware and Reliability Program (SHARP) TechnologyIndependent Representation of Electronic Products (TIREP) project. It is intended for use by VHSIC HardwareDescription Language (VHDL) design engineers and is offered as guidance for the development of VHDL modelswhich are compliant with the VHDL Data Item Description (DID DI-EGDS-80811) and which can be providedto manufacturing engineering personnel for the development of production data and the subsequent productionof hardware. Most VHDL modeling performed to date has been concentrated at either the component level orat the conceptual system level. The assembly and sub-assembly levels have been largely disregarded. Under theSHARP TIREP project, an attempt has been made to help close this gap. The TIREP models are based upon lowcomplexity Standard Electronic Modules (SEM) of the format A configuration. Although these modules are quitesimple, it is felt that the lessons learned offer guidance which can readily be applied to a wide range of assemblytypes and complexities.

    標簽: Modelling Guide Navy VHDL

    上傳時間: 2014-12-23

    上傳用戶:xinhaoshan2016

  • 凌力爾特工業信號鏈路

    Industrial systems demand semiconductors that are precise, flexibleand reliable. Linear Technology offers a broad line of high performanceanalog ICs that simplify system design with rugged devices featuringparameters fully guaranteed over the -40°C to 85°C temperature range.We back this up with knowledgeable applications support, long productlife cycles and superior on-time delivery.

    標簽: 凌力爾特 工業信號 鏈路

    上傳時間: 2013-11-02

    上傳用戶:xiaodu1124

  • MAX5713-MAX5715數據資料

    The MAX5713/MAX5714/MAX5715 4-channel, low-power,8-/10-/12-bit, voltage-output digital-to-analog converters(DACs) include output buffers and an internal referencethat is selectable to be 2.048V, 2.500V, or 4.096V. TheMAX5713/MAX5714/MAX5715 accept a wide supplyvoltage range of 2.7V to 5.5V with extremely low power(3mW) consumption to accommodate most low-voltageapplications. A precision external reference input allowsrail-to-rail operation and presents a 100kI (typ) load toan external reference.

    標簽: MAX 5713 5715 數據資料

    上傳時間: 2013-12-23

    上傳用戶:ArmKing88

  • 基準電壓的溫度漂移研究應用筆記

    Abstract: A perfect voltage reference produces a stable voltage independent of any external factors. Real-world voltagereferences, of course, are subject to errors caused by many external factors. One causeof these major errors istemperature. Without care, it is easy to operate a voltage reference outside its operating temperature range. Thisapplication note describes how references respond to temperature changes, and how self-heating can cause a voltagereference to operate outside its recommended temperature range. Once understood, this knowledge can then be used toavoid making this design error.

    標簽: 基準電壓 溫度漂移 應用筆記

    上傳時間: 2013-11-08

    上傳用戶:xianglee

  • 應用筆記-校準激光驅動器POT和DAC

    Abstract: A laser module designer can use a fixed resistor, mechanical pot, digital pot, or a digital-to-analogconverter (DAC) to control the laser driver's modulation and bias currents. The advantages of a programmablemethod (POT or DAC) are that the manufacturing process can be automated and digital control can be applied(e.g., to compensate for temperature). Using POTs can be a more simple approach than a DAC. There can be aslight cost advantage to using a POT, but this is usually not significant relative to other pieces of the design.Using a DAC can offer advantages, including improved linearity (translating to ease of software implementationand ability to hit the required accuracy), increased board density, a wider range of resolutions, a betteroptimization range, ease of use with a negative voltage laser driver, and unit-to-unit consistency

    標簽: POT DAC 應用筆記 校準

    上傳時間: 2013-11-13

    上傳用戶:ca05991270

  • 利用數字電位器調整并校準升壓型DC-DC轉換器

    The purpose of this application note is to show an example of how a digital potentiometer can be used in thefeedback loop of a step-up DC-DC converter to provide calibration and/or adjustment of the output voltage.The example circuit uses a MAX5025 step-up DC-DC converter (capable of generating up to 36V,120mWmax) in conjunction with a DS1845, 256 position, NV digital potentiometer. For this example, the desiredoutput voltage is 32V, which is generated from an input supply of 5V. The output voltage can be adjusted in35mV increments (near 32V) and span a range wide enough to account for resistance, potentiometer and DCDCconverter tolerances (27.6V to 36.7V).

    標簽: DC-DC 數字電位器 升壓型 校準

    上傳時間: 2014-12-23

    上傳用戶:781354052

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