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)計原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計，PROTEL99SE 設(shè)計的工程文件，包括完整的原理圖和PCB文件，可以做為你的學(xué)習(xí)設(shè)計參考。 摘要：本文實(shí)現(xiàn)了一個基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置，采用直流穩(wěn)壓源和滑動變阻器來模擬光伏電池。通過TMS320F2812 DSP芯片ADC模塊實(shí)時采樣模擬電網(wǎng)電壓的正弦參考信號、光伏電池輸出電壓、負(fù)載電壓電流反饋信號等。經(jīng)過數(shù)據(jù)處理后，用PWM模塊產(chǎn)生實(shí)時的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)了輸出信號對給定模擬電網(wǎng)電壓的正弦參考信號的頻率和相位跟蹤，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、聲光報警功能、孤島效應(yīng)的檢測、保護(hù)與自恢復(fù)功能。系統(tǒng)測試結(jié)果表明本設(shè)計完全滿定設(shè)計要求。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)動電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計算公式 32.1.3. SPWM 脈沖計算公式中的參數(shù)計算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計方法 62.2. MPPT的控制方法與參數(shù)計算 72.3. 同頻、同相的控制方法和參數(shù)計算 8
標(biāo)簽： tms320f2812 光伏 并網(wǎng)發(fā)電 模擬 protel pcb
上傳時間： 2021-11-02
上傳用戶：
This Section covers the design of power transformers used in buck-derived topologies: forward converter, bridge, half-bridge, and full-wave centertap. Flyback transformers (actually coupled inductors) are covered in a later Section. For more specialized applications, the principles discussed herein will generally apply.
上傳時間： 2021-12-16
上傳用戶：fliang
Assessment of the Possible Health Effects of Ground Wave Emergency Network (1993)
標(biāo)簽： gwen 地波網(wǎng)絡(luò)
上傳時間： 2022-02-18
上傳用戶：trh505
結(jié)構(gòu)體的具體尺寸如下所示：a=1.20h=0.620其中介質(zhì)錐的介電常數(shù)E=2.0。選定工作頻率為f=15GHz相對應(yīng)的真空中的波長為0=20mm，這樣結(jié)構(gòu)體的兒何尺寸己經(jīng)完全確定，下面介紹求解的全過程選定求解方式為（Solution Type）Driven modal1.建立所求結(jié)構(gòu)體的幾何模型（單位：mm）。由于此結(jié)構(gòu)體的幾何形狀較簡單，使用工具欄中的Draw命令可直接畫出，這里不再贅述述。畫出的結(jié)構(gòu)體如圖4.1.2所示。2.充結(jié)構(gòu)體的材料選定結(jié)構(gòu)體中的錐體部分，添加其介電常數(shù)Er=20的介質(zhì)材料注：如果HSS中沒有提供與所需參數(shù)完全相同的材料，用戶可以通過新建材料或修改已有材料，使其參數(shù)滿足用戶需求設(shè)定結(jié)構(gòu)體的邊界條件及其激勵源a.選定結(jié)構(gòu)體的貼片部分，設(shè)定其為理想導(dǎo)體（PerE）。b.畫出尺寸為X×Y×Z=70mm×70mm×40mm的長方體作為輻射邊界，并設(shè)定其邊界條件為輻射邊界條件（Radiation Boundary）。c.由于要求出結(jié)構(gòu)體的RCS，因此設(shè)定激勵源為平面入射波（Incident Wave Source）。如圖4.1.3所示。4.設(shè)定求解細(xì)節(jié)，檢驗(yàn)并求解a.設(shè)定求解過程的工作頻率為f=15GHz.其余細(xì)節(jié)設(shè)定如圖4.1.4所示。b.設(shè)定遠(yuǎn)區(qū)輻射場的求解（Far Field Radiation Sphere欄的設(shè)定）。c.使用 Validation check命令進(jìn)行檢驗(yàn)，無錯誤發(fā)生，下一步運(yùn)行命令 Analyze，對柱錐結(jié)構(gòu)體進(jìn)行求解。如圖4.1.5和4.1.6所示。
上傳時間： 2022-03-10
上傳用戶：
數(shù)字示波器功能強(qiáng)大,使用方便,但是價格相對昂貴。本文以Ti的MSP430F5529為主控器,以Altera公司的EP2C5T144C8 FPGA器件為邏輯控制部件設(shè)計數(shù)字示波器。模擬信號經(jīng)程控放大、整形電路后形成方波信號送至FPGA測頻,根據(jù)頻率值選擇采用片上及片外高速AD分段采樣。FPGA控制片外AD采樣并將數(shù)據(jù)輸入到FIFO模塊中緩存,由單片機(jī)進(jìn)行頻譜分析。測試表明:簡易示波器可以實(shí)現(xiàn)自動選檔、多采樣率采樣、高精度測頻及頻譜分析等功能。Digital oscilloscope is powerful and easy to use, but also expensive. The research group designed a low-cost digital oscilloscope, the chip of MSP430F5529 of TI is chosen as the main controller and the device of EP2C5T144C8 of Altera company is used as the logic control unit. Analog signal enter the programmable amplifier circuit, shaping circuit and other pre-processing circuit. The shaped rectangular wave signal is sent to FPGA for measure the frequency. According to the frequency value to select AD on-chip or off-chip high-speed AD for sampling. FPGA controls the off-chip AD sampling and buffers AD data by FIFO module. The single chip microcomputer receives the data, and do FFT for spectrum analysis. The test shows that the simple oscilloscope can realize automatic gain selection, sampling at different sampling rates, high precision frequency measurement and spectrum analysis.
標(biāo)簽： msp430 單片機(jī) fpga 數(shù)字示波器
上傳時間： 2022-03-27
上傳用戶：
超聲波換能器作為一種實(shí)用的檢測手段，能實(shí)現(xiàn)聲波所攜帶的信息和電能之間轉(zhuǎn)換。它的性能優(yōu)良，價格低廉，操作方便，易于調(diào)試，因此在工農(nóng)業(yè)生產(chǎn)中發(fā)揮著重要的作用。但目前換能器驅(qū)動電路的發(fā)射頻率多為40 kHz，本文針對1 MHz的超聲波換能器電路進(jìn)行了設(shè)計，主要介紹了它的發(fā)射驅(qū)動電路和接收驅(qū)動電路的設(shè)計方案，并對它們的功能進(jìn)行了詳細(xì)地說明。最后搭建實(shí)驗(yàn)平臺，并對電路的輸入、輸出模塊進(jìn)行了測試。實(shí)驗(yàn)結(jié)果表明，換能器電路運(yùn)行良好，可以為超聲波高精度測量領(lǐng)域的應(yīng)用提供參考。As a practical means of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer＇ s...
上傳時間： 2022-04-28
上傳用戶：
說明： 用單片機(jī)實(shí)現(xiàn)波形發(fā)生器，含電路圖，原理圖，源碼(generate wave)
上傳時間： 2022-05-27
上傳用戶：zhanglei193
1-1前言一般人所能夠感受到聲音的頻率約介於5H2-20KHz，超音波（Ultrasonic wave）即爲(wèi)頻率超過20KHz以上的音波或機(jī)械振動，因此超音波馬達(dá)就是利用超音波的彈性振動頻率所構(gòu)成的制動力。超音波馬達(dá)的內(nèi)部主要是以壓電陶瓷材料作爲(wèi)激發(fā)源，其成份是由鉛（Pb）、結(jié)（Zr）及鈦（Ti）的氧化物皓鈦酸鉛（Lead zirconate titanate，PZT）製成的。將歷電材料上下方各黏接彈性體，如銅或不銹鋼，並施以交流電壓於壓電陶瓷材料作爲(wèi)驅(qū)動源，以激振彈性體，稱此結(jié)構(gòu)爲(wèi)定子（Stator），將其用彈簧與轉(zhuǎn)子Rotor）接觸，將所産生摩擦力來驅(qū)使轉(zhuǎn)子轉(zhuǎn)動，由於壓電材料的驅(qū)動能量很大，並足以抗衡轉(zhuǎn)子與定子間的正向力，雖然伸縮振幅大小僅有數(shù)徵米（um）的程度，但因每秒之伸縮達(dá)數(shù)十萬次，所以相較於同型的電磁式馬達(dá)的驅(qū)動能量要大的許多。超音波馬達(dá)的優(yōu)點(diǎn)爲(wèi)：1，轉(zhuǎn)子慣性小、響應(yīng)時間短、速度範(fàn)圍大。2，低轉(zhuǎn)速可產(chǎn)生高轉(zhuǎn)矩及高轉(zhuǎn)換效率。3，不受磁場作用的影響。4，構(gòu)造簡單，體積大小可控制。5，不須經(jīng)過齒輸作減速機(jī)構(gòu)，故較爲(wèi)安靜。實(shí)際應(yīng)用上，超音波馬達(dá)具有不同於傳統(tǒng)電磁式馬達(dá)的特性，因此在不適合應(yīng)用傳統(tǒng)馬達(dá)的場合，例如：間歇性運(yùn)動的裝置、空間或形狀受到限制的場所；另外包括一些高磁場的場合，如核磁共振裝置、斷層掃描儀器等。所以未來在自動化設(shè)備、視聽音響、照相機(jī)及光學(xué)儀器等皆可應(yīng)用超音波馬達(dá)來取代。
標(biāo)簽： 超聲波電機(jī)
上傳時間： 2022-06-17
上傳用戶：
摘要：本系統(tǒng)以ICL8038集成塊為核心器件，制作一種函數(shù)信號發(fā)生器，制作成本較低。適合學(xué)生學(xué)習(xí)電子技術(shù)測量使用。ICL8038是一種具有多種波形輸出的精密振蕩集成電路，只需要個別的外部元件就能產(chǎn)生從0.001Hz~30KlHz的低失真正弦波、三角波、矩形波等脈沖信號。輸出波形的頻率和占空比還可以由電流或電阻控制。另外由于該芯片具有調(diào)制信號輸入端，所以可以用來對低頻信號進(jìn)行頻率調(diào)制。關(guān)鍵詞：函數(shù)信號發(fā)生器頻率調(diào)制Abstract：The system ICL8038 integrated block as the core device，producing a kind of function signal generator，producing low cost.Suitable for students to learn the use of electronic technology measurement.ICL8038 is a kind of multi-precision oscillator waveform output integrated circuits，a separate external components only need to be able to generate from the 0.001Hz ~30KHz low-distortion sine wave，triangle wave，square wave pulse signal，etc..Output waveform of the frequency and duty cycle can also be controlled by a currentor resistance.In addition，as the chip has a modulated signal input terminal，it can be used to low-frequency signal is frequency modulation.
標(biāo)簽： icl8038 函數(shù)發(fā)生器 電路
上傳時間： 2022-07-04
上傳用戶：zhanglei193
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