GaN is an already well implanted semiconductor technology, widely diffused in the LED optoelectronics industry. For about 10 years, GaN devices have also been developed for RF wireless applications where they can replace Silicon transistors in some selected systems. That incursion in the RF field has open the door to the power switching capability in the lower frequency range and thus to the power electronic applications. Compared to Silicon, GaN exhibits largely better figures for most of the key specifications: Electric field, energy gap, electron mobility and melting point. Intrinsically, GaN could offer better performance than Silicon in terms of: breakdown voltage, switching frequency and Overall systems efficiency.
標(biāo)簽： GaN-on-Si Displace and SiC Si
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
adio Frequency Identification (RFID) is a rapidly developing automatic wireless data-collection technology with a long history.The first multi-bit functional passive RFID systems,with a range of several meters, appeared in the early 1970s, and continued to evolve through the 1980s. Recently, RFID has experienced a tremendous growth,due to developments in integrated circuits and radios, and due to increased interest from the retail industrial and government.
標(biāo)簽： RFID-Enabled Sensors RFID and
上傳時(shí)間： 2020-06-08
上傳用戶：shancjb
The purpose of this book is to present detailed fundamental information on a global positioning system (GPS) receiver. Although GPS receivers are popu- larly used in every-day life, their operation principles cannot be easily found in one book. Most other types of receivers process the input signals to obtain the necessary information easily, such as in amplitude modulation (AM) and frequency modulation (FM) radios. In a GPS receiver the signal is processed to obtain the required information, which in turn is used to calculate the user position. Therefore, at least two areas of discipline, receiver technology and navigation scheme, are employed in a GPS receiver. This book covers both areas.
標(biāo)簽： Fundamentals_of_Global_Positionin g_System_Receivers
上傳時(shí)間： 2020-06-09
上傳用戶：shancjb
Control Systems Engineering is an exciting and challenging field and is a multidisciplinary subject. This book is designed and organized around the concepts of control systems engineering using MATLAB, as they have been developed in the frequency and time domain for an introductory undergraduate or graduate course in control systems for engineer- ing students of all disciplines.
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
HRVAS is a complete and self-contained heart rate variability analysis software (HRVAS) package. HRVAS offers several preprocessing options. HRVAS offers time-domeain, freq-domain, time-frequency, and nonlinear HRV analysis. All results can be exported to an Excel file. For processing many files HRVAS offers a bach processing feature. All settings/options can be saved to a .mat file and reloaded for future HRV analysis. Upon starting HRVAS all previously used settings/options are loaded.
標(biāo)簽： HRVAS時(shí)頻分析
上傳時(shí)間： 2021-09-19
上傳用戶：boboo
STM8單片機(jī)開發(fā)板資料STM8S208RB DEMO軟件源碼+例程講解+開發(fā)板原理圖+芯片資料:'stm8板原理圖.pdf使用說明文件開發(fā)板介紹.pdf相關(guān)例程講解相關(guān)芯片資料相關(guān)輔助軟件軟件源碼程序AD(寄存器操作，連續(xù)轉(zhuǎn)換模式)ADC_OLEDBEEP 寄存器操作BEPPCAN For STVDCLKDS18B20EXTII2C_24C02I2C_24C64IWDG獨(dú)立看門狗KEYLCD1602LEDRADIOTIME1_pwmTime4_1Time4_2USART1AD應(yīng)用.pdfGPIO口操作.pdfI2C應(yīng)用.pdfIWDG_獨(dú)立看門狗.pdfMMA7455例程簡(jiǎn)單介紹.pdfSPI.pdfTIME1-PWM應(yīng)用.pdfTIME4應(yīng)用.pdfUSART應(yīng)用.pdf時(shí)鐘.pdf蜂鳴器應(yīng)用.pdf
標(biāo)簽： stm8 單片機(jī) 開發(fā)板 stm8s208rb demo
上傳時(shí)間： 2021-10-25
上傳用戶：qdxqdxqdxqdx
Multisim官方示例Multisim仿真例程基礎(chǔ)電路范例135例合集:Chapter 1 - RLC CircuitsChapter 2 - DiodesChapter 3 - TransistorsChapter 4 - AmplifiersChapter 5 - OpampsChapter 6 - FiltersChapter 7 - Miscellaneous CircuitsFundamental Circuits.pdf004 Parallel DC Circuits.ms10005 Series-Parrallel DC Circuit.ms10006 Current Analysis.ms10007 Millmans Theorem 1.ms10008 Millmans Theorem 2.ms10009 Kirchhoff's Current Law.ms10010 Thevenin's Theorem.ms10011 Superposition Principle.ms10012 Nortons Theorem and Source Conversion.ms10013 AC Voltage Measurement.ms10014 Frequency Response of the Series RL Network.ms10015 RL High and Low Pass Filter.ms10016 Frequency Response of the Series RC Network.ms10017 RC High and Low Pass Filter.ms10019 Center-Tapped Full-Wave Rectifier.ms10020 Bridge Rectifier.ms10021 Capacitor-Input Rectifier Filter.ms10022 Diode Clipper (Limiter).ms10023 Diode Clipper.ms10024 Diode Clamper (DC Restorer).ms10025 Diode Voltage Doubler.ms10026 Zener Diode and Voltage Regulation 1.ms10027 Zener Diode and Voltage Regulation 2.ms10028 Zener Diode and Voltage Regulation 3.ms10105 TTL Inverter.ms10107 TTL Gate.ms10109 OR Gate Circuit.ms10111 Over-Damp Circuit.ms10113 Critical-Damp Circuit.ms10115 Series RLC Circuit 1.ms10117 Clapp Oscillator.ms10119 Differential Amplifier 1.ms10121 Differential Amplifier in Common Mode.ms10123 LC Oscillator with Unity Gain Buffer.ms10125 Notch Filter.ms10127 PNP Differential Pair.ms10129 Crossover Network.ms10131 Second-Order High-Pass Chebyshev Filter.ms10133 Third-Order High-Pass Chebyshev Filter.ms10135 Fifth-Order High-Pass Filter.ms10
標(biāo)簽： multisim
上傳時(shí)間： 2021-10-27
上傳用戶：trh505
基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計(jì)，PROTEL99SE 設(shè)計(jì)的工程文件，包括完整的原理圖和PCB文件，可以做為你的學(xué)習(xí)設(shè)計(jì)參考。 摘要：本文實(shí)現(xiàn)了一個(gè)基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置，采用直流穩(wěn)壓源和滑動(dòng)變阻器來模擬光伏電池。通過TMS320F2812 DSP芯片ADC模塊實(shí)時(shí)采樣模擬電網(wǎng)電壓的正弦參考信號(hào)、光伏電池輸出電壓、負(fù)載電壓電流反饋信號(hào)等。經(jīng)過數(shù)據(jù)處理后，用PWM模塊產(chǎn)生實(shí)時(shí)的SPWM 波，控制MOSFET逆變?nèi)珮蜉敵稣也ā１疚挠肞I控制算法實(shí)現(xiàn)了輸出信號(hào)對(duì)給定模擬電網(wǎng)電壓的正弦參考信號(hào)的頻率和相位跟蹤，用恒定電壓法實(shí)現(xiàn)了光伏電池最大功率點(diǎn)跟蹤（MPPT），從而達(dá)到模擬并網(wǎng)的效果。另外本裝置還實(shí)現(xiàn)了光伏電池輸出欠壓、負(fù)載過流保護(hù)功能以及光伏電池輸出欠壓、過流保護(hù)自恢復(fù)功能、聲光報(bào)警功能、孤島效應(yīng)的檢測(cè)、保護(hù)與自恢復(fù)功能。系統(tǒng)測(cè)試結(jié)果表明本設(shè)計(jì)完全滿定設(shè)計(jì)要求。關(guān)鍵詞：光伏并網(wǎng)，MPPT，DSP Photovoltaic Grid-connected generation simulator Zhangyuxin，Tantiancheng，Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the purpose of grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual alarm, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected，MPPT，DSP 目錄引言 11. 方案論證 11.1. 總體介紹 11.2. 光伏電池模擬裝置 11.3. DC-AC逆變橋 11.4. MOSFET驅(qū)動(dòng)電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計(jì)算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計(jì)算公式 32.1.3. SPWM 脈沖計(jì)算公式中的參數(shù)計(jì)算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計(jì)方法 62.2. MPPT的控制方法與參數(shù)計(jì)算 72.3. 同頻、同相的控制方法和參數(shù)計(jì)算 8
標(biāo)簽： tms320f2812 光伏 并網(wǎng)發(fā)電 模擬 protel pcb
上傳時(shí)間： 2021-11-02
上傳用戶：
FFeeaattuurreess ? Input voltage range: 2.2 to 6V ? Programmable LED Current ? Drives LEDs Up to 27V ? Switching Frequency：up to 800KHz ? Wide dimming frequency range: 20KHz~ 360 KHz ? Programmable Overvoltage Protection ? Tiny SOP8/PP Package
標(biāo)簽： HX3248C
上傳時(shí)間： 2021-11-05
上傳用戶：aben
Wide 2.2V to 6V Input Voltage Range ? 0.20V FB adjustable LED drive current ? Directly drive 9 Series 1W LED at VIN>=6V ? Fixed 800KHz Switching Frequency ? Max. 3A Switching Current Capability ? Up to 92% efficiency ? Excellent line and load regulation ? EN PIN TTL shutdown capability ? Internal Optimize Power MOSFET
標(biāo)簽： sc3633
上傳時(shí)間： 2021-11-05
上傳用戶：d1997wayne
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