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The PW5300 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.2? powerMOSFET make this regulator highly power efficient. The internal compensation network alsominimizes as much as 6 external component counts. The non-inverting input of error amplifierconnects to a 0.6V precision reference voltage and internal soft-start function can reduce the inrushcurrent. The PW5300 is available in the SOT23-6L package and provides space-saving PCB for theapplication fields
標(biāo)簽：
pw5300
上傳時間：
2022-02-11
上傳用戶：jiabin
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高清電子書-C++ Primer Plus, 第6版英文版 1438頁Learning C++ is an adventure of discovery, particularly because the language accommodates several programming paradigms, including object-oriented programming,
generic programming, and the traditional procedural programming.The fifth edition of
this book described the language as set forth in the ISO C++ standards, informally
known as C++99 and C++03, or, sometimes as C++99/03. (The 2003 version was
largely a technical correction to the 1999 standard and didn’t add any new features.)
Since then, C++ continues to evolve.As this book is written, the international C++
Standards Committee has just approved a new version of the standard.This standard had
the informal name of C++0x while in development, and now it will be known as
C++11. Most contemporary compilers support C++99/03 quite well, and most of the
examples in this book comply with that standard. But many features of the new standard
already have appeared in some implementations, and this edition of C++ Primer Plus
explores these new features.
C++ Primer Plus discusses the basic C language and presents C++ features, making
this book self-contained. It presents C++ fundamentals and illustrates them with short,
to-the-point programs that are easy to copy and experiment with.You learn about
input/output (I/O), how to make programs perform repetitive tasks and make choices,
the many ways to handle data, and how to use functions.You learn about the many
features C++ has added to C, including the followi
標(biāo)簽：
C++
上傳時間：
2022-02-19
上傳用戶：trh505
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解讀 5G 八大關(guān)鍵技術(shù) 【摘要】5G 不是一次革命，5G 是 4G 的延續(xù)，我相信 5G 在核心網(wǎng)部分不會有太 大的變動，5G 的關(guān)鍵技術(shù)集中在無線部分。 在進(jìn)入主題之前，我覺得首先應(yīng)該弄清楚一個問題：為什么需要 5G？不是因 為通信工程師們突然想改變世界，而炮制了一個 5G。是因?yàn)橄扔辛诵枨螅庞辛?5G。什么需求？ 未來的網(wǎng)絡(luò)將會面對：1000 倍的數(shù)據(jù)容量增長，10 到 100 倍的無線設(shè)備連接， 10 到 100 倍的用戶速率需求，10 倍長的電池續(xù)航時間需求等等。坦白的講，4G 網(wǎng)絡(luò)無法滿足這些需求，所以 5G 就必須登場。 但是，5G 不是一次革命。5G 是 4G 的延續(xù)，我相信 5G 在核心網(wǎng)部分不會有 太大的變動，5G 的關(guān)鍵技術(shù)集中在無線部分。雖然 5G 最終將采用何種技術(shù)，目前 還沒有定論。不過，綜合各大高端論壇討論的焦點(diǎn)，我今天收集了 8 大關(guān)鍵技術(shù)。 當(dāng)然，應(yīng)該遠(yuǎn)不止這些。 1.非正交多址接入技術(shù) （Non-Orthogonal Multiple Access,NOMA） 我們知道 3G 采用直接序列碼分多址（Direct Sequence CDMA ，DS-CDMA） 技術(shù)，手機(jī)接收端使用 Rake 接收器，由于其非正交特性，就得使用快速功率控制 （Fast transmission power control ，TPC)來解決手機(jī)和小區(qū)之間的遠(yuǎn)-近問題。 而 4G 網(wǎng)絡(luò)則采用正交頻分多址（
標(biāo)簽：
5G
上傳時間：
2022-02-25
上傳用戶：20125101110
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溫度控制如今已成為當(dāng)代社會研究的熱點(diǎn)之一,而溫度檢測在現(xiàn)代設(shè)備參數(shù)檢測中也是一項(xiàng)極其重要的技術(shù),應(yīng)用十分廣泛。與傳統(tǒng)的測溫方法相比,紅外測溫方法具有時間短、精度高、使用簡單方便等優(yōu)點(diǎn)。本文以環(huán)境溫度為被測對象,設(shè)計(jì)了以STC89C52單片機(jī)為控制中心的紅外測溫裝置,能夠?qū)崿F(xiàn)對目標(biāo)溫度的實(shí)時采集、處理、顯示和報警等功能。本設(shè)計(jì)主要是由STC89C52單片機(jī)、紅外測溫傳感器、LCD1602液晶顯示器、按鍵和蜂鳴器等部分組成,采用非接觸的方式對目標(biāo)溫度進(jìn)行實(shí)時檢測。Temperature control has become one of the hotspots in contemporary social research,and temperature detection is an extremely important technology in modern equipment parameter detection.Compared with traditional method,the infrared temperature measuring method has advantages of short time,high precision and convenient operation,etc.This paper consider environment temperature as research objects and designs an infrared temperature measuring device which employs the STC89C52singlechipas-control center,and it can realize timely collection,processing,display and alarm function of the target temperature.The design is mainly composed of STC89C52 singlechip,infrared temperature sensor,LCD1602monitor,keys and buzzer,etc.This design detects the target temperature by non-contact method.
標(biāo)簽：
單片機(jī)
紅外測溫
上傳時間：
2022-03-27
上傳用戶：jiabin
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本系統(tǒng)基于STM32單片機(jī)設(shè)計(jì)的非接觸式電流檢測控制系統(tǒng),通過OPA548片將所給任意信號放大,由100Ω電阻和INA128芯片進(jìn)行電流電壓轉(zhuǎn)換放大后,利用STM32單片機(jī)對獲取的電壓信號以0.488μs頻率采樣,利用STM32單片機(jī)的FFT庫,獲得信號的諧波信息。測量電流信號精準(zhǔn),該設(shè)計(jì)可廣泛應(yīng)用在以STM32單片機(jī)為核心控制器件的新型儀表中,性能精準(zhǔn)且抗干擾能力強(qiáng)。This system is a non-contact current detection and control system based on STM32 single chip microcomputer. It amplifiesany signal through OPA548 chip, converts and amplifies the current and voltage by 100 Ω resistance and INA128 chip. The obtainedvoltage signal is sampled at the frequency of 0.488 μs by STM 32 single chip microcomputer, and the harmonic information of the signalis obtained by the FFT library of STM 32 single chip microcomputer. The measurement of current signal is accurate. This design can bewidely used in a new instrument with STM 32 single chip microcomputer as its core control device, with accurate performance and stronganti-interference capability.
標(biāo)簽：
stm32
單片機(jī)
上傳時間：
2022-03-27
上傳用戶：
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應(yīng)用無跡卡爾曼濾波算法（UKF）進(jìn)行鋰電池的SOC估計(jì),采用Thevenin二階RC等效電路模型,對HPPC電池脈沖充放電實(shí)驗(yàn)數(shù)據(jù)進(jìn)行Matlab處理,得到較為準(zhǔn)確的模型.通過在Matlab中編寫算法程序,對不同工況的估計(jì)值與實(shí)際值進(jìn)行誤差估算及對比分析,通過此算法進(jìn)行SOC估計(jì),得到該算法可有效降低系統(tǒng)誤差并糾正SOC的初值偏差.The non trace Calman filter （UKF） is applied to the SOC estimation of lithium battery. The Thevenin two order RC equivalent circuit model is used to process the HPPC battery pulse charge discharge experimental data by Matlab processing, and a more accurate model is obtained. By writing algorithm program in Matlab, the error estimation and comparison analysis of the estimated value and actual value of different states are carried out, and the SOC estimation is carried out by this algorithm. The algorithm can effectively reduce the system error and correct the initial value deviation of the SOC.
標(biāo)簽：
卡爾曼濾波
上傳時間：
2022-05-03
上傳用戶：默默
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Vivado設(shè)計(jì)分為Project Mode和Non-project Mode兩種模式，一般簡單設(shè)計(jì)中，我們常用的是Project Mode。在本手冊中，我們將以一個簡單的實(shí)驗(yàn)案例，一步一步的完成Vivado的整個設(shè)計(jì)流程一、新建工程1、打開Vivado 2013.4開發(fā)工具，可通過桌面快捷方式或開始菜單中xilinx DesignTools-Vivado 2013.4下的Vivado 2013.4打開軟件，開啟后，軟件如下所示：2、單擊上述界面中Create New Project圖標(biāo)，彈出新建工程向?qū)Вc(diǎn)擊Next.3、輸入工程名稱、選擇工程存儲路徑，并勾選Create project subdirectory選項(xiàng)，為工程在指定存儲路徑下建立獨(dú)立的文件夾。設(shè)置完成后，點(diǎn)擊Next注意：工程名稱和存儲路徑中不能出現(xiàn)中文和空格，建議工程名稱以字母、數(shù)字、下劃線來組成。4、選擇RTL Project一項(xiàng)，并勾選Do not specifty sources at this time，勾選該選項(xiàng)是為了跳過在新建工程的過程中添加設(shè)計(jì)源文件。點(diǎn)擊Next.IA5、根據(jù)使用的FPGA開發(fā)平臺，選擇對應(yīng)的FPGA目標(biāo)器件。（在本手冊中，以xilinx官方開發(fā)板KC705為例，Nexys4開發(fā)板請選擇Artix-7 XC7A100TCSG324-2的器件，即Family和Subfamily均為Artix-7，封裝形式（Package）為cSG324，速度等級（Speed grade）為-1，溫度等級（Temp Grade）為C）。點(diǎn)擊Next6、確認(rèn)相關(guān)信息與設(shè)計(jì)所用的的FPGA器件信息是否一致，一致請點(diǎn)擊Finish，不一致，請返回上一步修改。二、設(shè)計(jì)文件輸入1、如下圖所示，點(diǎn)擊Flow Navigator下的Project Manager->Add Sources或中間Sources中的對話框打開設(shè)計(jì)文件導(dǎo)入添加對話框。2、選擇第二項(xiàng)Add or Create Design Sources，用來添加或新建Verilog或VHDL源文件，點(diǎn)擊Next
標(biāo)簽：
vivado
上傳時間：
2022-05-28
上傳用戶：默默
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文檔資料 - 0視頻教程 - 0工具 - 0ESP8266開發(fā)板例程_基于NON-OS_SDK.zip - 273.05MB深藍(lán)串口調(diào)試工具(支持UTF-8) - 0樂鑫開發(fā)環(huán)境搭建 - 0技小新_MQTT單片機(jī)編程小工具 - 0UTF-8串口助手 - 0tcp調(diào)試助手 - 0SER-NET - 0MQTT_FX客戶端 - 0flash_download_tools_v3.6.3 - 0flash_download_tools_v3.6.3.rar - 6.61MBmqttfx-1.7.0-windows-x64 - 0
標(biāo)簽：
esp8266
上傳時間：
2022-06-05
上傳用戶：trh505
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The information disclosed to you hereunder (the Materials ) is provided solely for the selection and use of Xilinx products. To the maximum extent permitted by applicable law: (1) Materials are made available"AS IS"and with all faults, Xilinx hereby DISCLAIMS ALL WARRANTIES AND CONDITIONS, EXPRESS, IMPLIED, OR ST ATUTORY, INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY NON-INFRINGEMENT, OR FITNESS FOR ANY PARTICULAR PURPOSE; and (2) Xilinx shall not be liable (whether in contract or tort. includina nealigence. or under anv other theorv of liabilitv) for any loss or damage of any kind or nature related to, arising under, or in connection with, the Materials (including vour use of the Materials), including for any direct, indirect, special, incidental, or consequential loss or damage (including loss of data, profits, qoodwill, or any type of loss or damage suffered as a result of anv action brought by a third party)
標(biāo)簽：
xinlinx
spartan-6
上傳時間：
2022-06-18
上傳用戶：
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隨著數(shù)字信號處理技術(shù)和數(shù)字電路工作速度的提高，以及對于系統(tǒng)靈敏度等要求的不斷提高，對于高速、高精度的ADC、DAC的指標(biāo)都提出了很高的要求。比如在移動通信、圖像采集等應(yīng)用領(lǐng)域中，一方面要求ADC有比較高的采樣率以采集高帶寬的輸入信號，另一方面又要有比較高的位數(shù)以分辨細(xì)微的變化。因此，保證ADC/DAC在高速采樣情況下的精度是一個很關(guān)鍵的問題。ADC/DAC芯片的性能測試是由芯片生產(chǎn)廠家完成的，需要借助昂貴的半導(dǎo)體測試儀器，但是對于板級和系統(tǒng)級的設(shè)計(jì)人員來說，更重要的是如何驗(yàn)證芯片在板級或系統(tǒng)級應(yīng)用上的真正性能指標(biāo)。ADC的主要參數(shù)ADC的主要指標(biāo)分為靜態(tài)指標(biāo)和動態(tài)指標(biāo)2大類。靜態(tài)指標(biāo)主要有：Differ ential Non-Li nearity（DNL）ntegral Non-Li nearity（INL）Of fset Error ull Scale Gain Error動態(tài)指標(biāo)主要有：
標(biāo)簽：
ADC
DAC
上傳時間：
2022-06-19
上傳用戶：
