亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频

蟲蟲首頁| 資源下載| 資源專輯| 精品軟件
登錄| 注冊

analyzed

  • Interference+Mitigation+Techniques

    This research work aims at eliminating the off-chip RF SAW filters from fre- quency division duplexed (FDD) receivers. In the first approach, a monolithic passive RF filter was constructed using on-chip capacitors and bondwire inductors. The bond- wire characteristics were studied in details and the effect of mutual inductive coupling between the bondwires on the filter performance was analyzed. Based on that, a bond- wire configuration was proposed to improve the frequency response of the filter. The filter was implemented in 0.18 μm CMOS process for WCDMA applications.

    標簽: Interference Mitigation Techniques

    上傳時間: 2020-05-27

    上傳用戶:shancjb

  • 基于單片機智能家居設計

    文章提出了一種基于AT89S51單片機的智能家居系統的設計,該系統具有室內煤氣以及煙霧的檢測、家庭室內防盜等功能。文章詳細分析了系統的總體設計,詳盡分析并設計了煤氣傳感器模塊、煙霧傳感器模塊、人體紅外感應傳感器模塊、報警模塊等各硬件部分,并利用PROTUES軟件進行了系統仿真。仿真結果證明:系統具有成本低、效率高、操作方便等優點,達到了預期設計的效果。This paper presents the design of an intelligent home system based on AT89S51 microcontroller.The system has the functions of detecting indoor gas and smoke,guarding against theft in the home,and so on.The overall design of the system is analyzed in detail.The gas sensor module,smoke sensor module,human infrared sensor module,alarm module and other hardware parts are analyzed and designed in detail,and the system simulation is carried out using PROTUES software.The simulation results show that the system has the advantages of low cost,high efficiency,convenient operation and so on,and achieves the expected design effect.

    標簽: 單片機 智能家居

    上傳時間: 2022-03-28

    上傳用戶:

  • MOSFET開關過程的研究及米勒平臺振蕩的抑制

    設計功率MOSFET驅動電路時需重點考慮寄生參數對電路的影響。米勒電容作為MOSFET器件的一項重要參數,在驅動電路的設計時需要重點關注。重點觀察了MOSFET的開通和關斷過程中柵極電壓、漏源極電壓和漏源極電流的變化過程,并分析了米勒電容、寄生電感等寄生參數對漏源極電壓和漏源極電流的影響。分析了柵極電壓在米勒平臺附近產生振蕩的原因,并提出了抑制措施,對功率MOSFET的驅動設計具有一定的指導意義。When designing the drive circuit of power MOSFET,the influence of parasitic parameters on the circuit should be concerned.As an important parameter of MOSFET device,Miller capacitance should be considered in the design of drive circuit.The variation of gate voltage,drain source voltage and drain source current during the turn-on and turn-off of MOSFET were observed.The influences of parasitic parameters such as Miller capacitance and parasitic inductance on drain source voltage and drain source current were analyzed.The reasons of gate voltage oscillation nearby Miller plateau were analyzed,and the restraining measures were put forward.This research was instructive for the drive design of power MOSFET.

    標簽: mosfet

    上傳時間: 2022-04-02

    上傳用戶:默默

  • 基于Proteus的單片機模數轉換電路的設計與仿真

    以單片機控制A/D轉換器TLC549為例,對A/D轉換器的主要技術指標進行了分析研究,在Proteus平臺下,完成了A/D轉換電路的構建,采用器件工作時序方式進行程序編寫,借助仿真圖表、虛擬儀器等工具對A/D轉換的數據進行測量并對失調誤差、增益誤差、微分非線性、積分非線性和轉換時間等重要參數進行了詳細分析。結果表明:使用Proteus軟件可對A/D轉換過程進行定性分析,將抽象的A/D轉換器技術指標直觀化、形象化展現出來,有助于學生更好地理解A/D轉換過程。The main technical indicators of A/D converter were analyzed and studied with an example from A/D converter TLC2543 which is controlled by using SCM.It was completed the construction of the A/D converter circuit under the Proteus software.The programming based on the operation sequence of the chip is put forward.With the aid of the simulation tools such as virtual instrument,simulation charts provided by Proteus,the important parameters of circuit such as offset error,gain error,differential nonlinearity(DNL),integral nonlinearity (INL) and conversion time are analyzed detailedly.Simulation results show that the A/D conversion process can be qualitatively analyzed and visualized the abstract indicators of A/D.The system can help students better to understand the SCM conversion process.

    標簽: proteus 單片機 模數轉換

    上傳時間: 2022-04-04

    上傳用戶:

  • 高精度雙向DC電源電流采樣電路設計

    為適應雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉換為正向電壓輸出。通過理論分析與仿真結合的方法對電流鏡采樣原理及4種不同的偏置電流電路方案進行對比,最后通過實驗數據驗證了高精度高邊電流采樣電路的有效性。實驗數據表明,該采樣電路可在-25~75℃的溫度工作范圍內,針對-10~+10 A范圍內的電流采樣實現優于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...

    標簽: 雙向DC電源 電流采樣

    上傳時間: 2022-04-22

    上傳用戶:

  • 開關電源濾波電路的優化設計

    隨著科技的發展,人們在日常生活中使用的電器越來越多,電子設備的電磁兼容性(EMC)也越來越重要。所以,人們對電子設備的電磁兼容性的要求也越來越嚴格,越來越規范。而在市場競爭中,如何降低成本、減少設備體積,是各電子設備制造廠家重點研究的課題。通過對開關電源的EMI濾波電路的類別和相應的技術特點進行分析,設計出一種既能提高性能,又能降低成本的濾波電路。With the development of technology, appliances people use in their daily lives, more and more electronic devices electromagnetic compatibility ( EMC ) has become increasingly important. So, people electromagnetic compatibility requirements of electronic devices have become increasingly stringent, more and more standardized. The competition in the market, how to reduce costs, reduce equipment size, is the subject of the electronic equipment manufacturer focused on research. Through the technical characteristics of the respective category and the EMI filter circuit switching power supply is analyzed both designed to improve a performance of the filter circuit can reduce the cost.

    標簽: 開關電源 濾波電路

    上傳時間: 2022-04-23

    上傳用戶:

  • 基于μc/os-ⅲ的freemodbus通信協議的實現

    摘要:介紹了以FreeModbus協議找在嵌入式搶占實時操作系統μC/OS-l的STM32平臺上,成功實現了Modbus協議的移植。通過詳細分析FreeModbus協議花并編寫STM32F103VET6微處理器的底層驅動,成功實現了工業Modbus協議RTU和ASCll兩種模式的通信功能。測試結果表明,在實際工業生產控制和儀表開發中,應用Freemodbus協議,完全符合工業數據采集、實時控制和數據處理等廠級重復性和精確度要求,在一定程度上降低了工業儀表開發的周期及成本。關鍵詞:實時操作系統,uC/OS-ll,FreeModbus,Modbus協議,STM32Abstract:This paper introduces FreeModbus stack transplanted to the STM32 platform which has been embedded in the preemptive real-time operating system uC/OS-ll,in order that the transplantation of the Modbus protocol is successfuly im-plemented.The FreeModbus stack is analyzed in detail and STM32F103VET6 microprocessor underlying driver is writed,so that the two Modbus industrial communication function RTU and ASCll are successfully realized.Keywords:time operating system,uC/OS-ll,.FreeModbus,Modbus協議,STM32

    標簽: freemodbus 通信協議

    上傳時間: 2022-06-25

    上傳用戶:

亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频
午夜伦理片一区| 一区二区三区四区五区在线| 最新国产の精品合集bt伙计| 麻豆成人综合网| 亚洲国产一区二区精品专区| 米奇777超碰欧美日韩亚洲| 精品成人久久| 欧美美女bbbb| 亚洲欧美在线aaa| 黄色精品网站| 欧美日韩国产大片| 欧美一区二区高清在线观看| 精久久久久久| 欧美日韩亚洲三区| 欧美在线在线| 一本到12不卡视频在线dvd| 国产欧美一区二区精品性| 久久综合给合| 亚洲男女自偷自拍图片另类| 国产在线一区二区三区四区| 女人香蕉久久**毛片精品| 亚洲美洲欧洲综合国产一区| 国产精品一区二区黑丝| 欧美成人免费视频| 欧美伊人精品成人久久综合97| 亚洲国产老妈| 国产一区白浆| 欧美系列精品| 欧美黑人在线观看| 久久频这里精品99香蕉| 亚洲欧美资源在线| 一本色道久久加勒比88综合| 一区二区亚洲精品| 国产日韩欧美在线| 国产精品嫩草久久久久| 欧美日本三区| 欧美成人一区二区三区片免费| 午夜精品美女自拍福到在线| 亚洲精品一区在线| 亚洲盗摄视频| 黑丝一区二区三区| 国产美女精品视频| 国产精品豆花视频| 欧美日韩亚洲一区二区三区在线观看| 久久频这里精品99香蕉| 久久超碰97中文字幕| 亚洲少妇中出一区| 一本一本久久| 99热在线精品观看| 亚洲精品久久久久久久久久久久 | 尤物在线精品| 国产视频久久久久久久| 国产精品久久91| 国产精品福利片| 国产精品mm| 国产精品揄拍一区二区| 国产精品天天摸av网| 国产精品日产欧美久久久久| 国产精品成人av性教育| 欧美日韩在线电影| 欧美午夜a级限制福利片| 欧美揉bbbbb揉bbbbb| 欧美日韩免费观看一区=区三区| 欧美不卡三区| 欧美国产第二页| 欧美精品一区在线观看| 欧美日韩一卡二卡| 国产精品老牛| 国产曰批免费观看久久久| 国产一区二区av| 依依成人综合视频| 亚洲免费电影在线| 亚洲欧美日韩精品久久久久 | 亚洲精品一区在线观看香蕉| 亚洲欧洲精品一区二区三区波多野1战4| 亚洲电影自拍| 一区二区免费看| 亚洲欧美日韩综合国产aⅴ| 午夜一区二区三视频在线观看 | 国产精品手机视频| 国产欧美精品日韩区二区麻豆天美| 国产精品日韩专区| 伊人一区二区三区久久精品| 亚洲国产一区二区视频| 一二三区精品福利视频| 欧美一区二区三区精品| 美腿丝袜亚洲色图| 国产精品二区二区三区| 国产一区二区三区观看| 亚洲精品影视| 久久激情视频久久| 欧美日韩国产专区| 激情久久五月| 亚洲视频一区在线| 久久亚洲精品一区二区| 欧美日韩亚洲三区| 狠狠久久综合婷婷不卡| 中文亚洲欧美| 欧美aⅴ99久久黑人专区| 国产精品夜色7777狼人| 亚洲国产综合在线| 欧美在线播放| 欧美色另类天堂2015| 依依成人综合视频| 午夜精品福利视频| 欧美日韩在线三级| 亚洲二区在线视频| 欧美一区二区黄色| 欧美三级电影网| 91久久精品网| 久久一综合视频| 国产午夜精品理论片a级探花| aa亚洲婷婷| 欧美成人久久| 亚洲国产成人tv| 久久久久久久久久久久久女国产乱| 国产精品国产三级国产aⅴ入口 | 欧美 日韩 国产一区二区在线视频| 国产精品九九久久久久久久| 亚洲精品在线三区| 免费欧美在线| 在线播放国产一区中文字幕剧情欧美| 亚洲一区久久| 国产精品成人在线观看| 亚洲日韩中文字幕在线播放| 玖玖综合伊人| 激情视频一区二区三区| 欧美专区福利在线| 国产欧美视频一区二区| 性色av一区二区三区红粉影视| 国产精品高潮呻吟| 亚洲一区二区免费视频| 欧美日韩在线高清| 亚洲图片欧洲图片av| 欧美日韩播放| 一区二区三区日韩精品| 欧美日韩一区在线| 欧美一区二区三区免费视| 欧美日韩在线观看一区二区三区| 亚洲美女性视频| 欧美日韩一区二区三区免费| 一本色道久久综合狠狠躁篇的优点 | 亚洲一区二区三区精品动漫| 欧美日韩成人网| 一本色道久久综合狠狠躁篇怎么玩 | 欧美精品粉嫩高潮一区二区 | 欧美另类videos死尸| 日韩视频在线观看国产| 欧美日韩国产a| 亚洲欧美www| 国产一区二区三区四区在线观看| 久久精精品视频| 亚洲国产另类精品专区| 欧美日本高清| 性久久久久久久久久久久| 国产一区二区三区免费观看| 老牛影视一区二区三区| 99热免费精品在线观看| 国产欧美一区二区精品秋霞影院 | 欧美在线一二三| 亚洲丰满在线| 欧美日韩成人在线| 欧美一级视频免费在线观看| 尤物网精品视频| 国产精品乱码一区二区三区| 久久精品亚洲精品| 亚洲久色影视| 国产综合亚洲精品一区二| 欧美精品在线观看播放| 亚洲欧美日韩中文播放| 在线欧美视频| 国产精品午夜av在线| 欧美国产日韩亚洲一区| 欧美一区二区播放| 亚洲精品一级| 极品少妇一区二区三区| 欧美手机在线视频| 欧美成人午夜77777| 欧美亚洲一区| 一本一本久久a久久精品综合麻豆| 国产日韩精品在线观看| 欧美精选一区| 久久综合国产精品台湾中文娱乐网| 一区二区三区四区国产| 一区视频在线播放| 国产精品网红福利| 欧美视频免费在线观看| 欧美va亚洲va日韩∨a综合色| 久久免费99精品久久久久久| 亚洲日本欧美日韩高观看| 国产亚洲一区二区三区| 欧美视频在线一区| 欧美韩日视频| 欧美成黄导航| 久久综合九色综合欧美就去吻| 亚洲摸下面视频| 在线视频你懂得一区 | 国内精品久久久久久 | 欧美日韩在线亚洲一区蜜芽| 久久免费黄色|