本書是 Marc Thompson 博士 20 年模擬電路設(shè)計(jì)和教學(xué)經(jīng)驗(yàn)的總結(jié)，講述了模擬電路與系統(tǒng)設(shè)計(jì)中常用的直觀分析方法。本書提出了“模擬電路直觀方法學(xué)”，力圖幫助學(xué)生和設(shè)計(jì)人員擺脫復(fù)雜的理論推導(dǎo)與計(jì)算，充分利用直觀知識來應(yīng)對模擬電路工程設(shè)計(jì)挑戰(zhàn)。全書共分為 16 章，內(nèi)容涵蓋了二極管、晶體管、放大器、濾波器、反饋系統(tǒng)等模擬電路的基本知識與設(shè)計(jì)方法。本書大綱第 1 章與第 2 章為介紹性材料。第 1 章是本書的引言，同時(shí)介紹了模擬電路設(shè)計(jì)的發(fā)展動機(jī)，其中引用了一些精選的歷史事件。第 2 章講述后續(xù)章節(jié)中用到地重要的信號處理概念，以使讀者們能夠跟上作者的思路。第 3 章至第 8 章講述雙極性器件的物理學(xué)原理、雙極性結(jié)型晶體管 (bipolar junction transistor, BJT) 、晶體管放大器，以及用于帶寬估計(jì)與開關(guān)速度分析的近似技術(shù)。第 9 章講述 CMOS 管和 CMOS 管放大器的基礎(chǔ)知識。前面章節(jié)介紹的用于放大器設(shè)計(jì)的帶寬估計(jì)技術(shù)也同樣適用于 CMOS 管器件。第 10 章講述 晶體管的開關(guān)效應(yīng)。晶體管是如何實(shí)現(xiàn)導(dǎo)通和關(guān)閉呢？又如何估計(jì)它的開關(guān)速度呢？第 11 章回顧反饋系統(tǒng) (feedback system) 的基本知識以及設(shè)計(jì)穩(wěn)定反饋系統(tǒng)的伯德圖 / 相位裕度方法 (Bod plot / phase margin) 。第 12 章和第 13 章講述實(shí)際運(yùn)算放大器的設(shè)計(jì)、使用和限制，包括電壓反饋 (voltage-feedback) 以及電流反饋 (current-feedback) 放大器。第 14 章講述模擬低通濾波器設(shè)計(jì)的基本知識，包括巴特沃思 (Butterworth) 、切比雪夫 (Chebyshev) 、橢圓 (elliptic) 以及貝塞爾 (Bessel) 濾波器的無源梯形實(shí)現(xiàn)和胡源實(shí)現(xiàn)。第 15 章講述實(shí)際電路設(shè)計(jì)問題，比如 PCB 版圖設(shè)計(jì)規(guī)則、無源器件的使用和限制等。第 16 章是一些有用的設(shè)計(jì)技術(shù)和設(shè)計(jì)技巧的大雜燴，這些內(nèi)容又不適合放在其他章節(jié)，所以作為獨(dú)立的章節(jié)進(jìn)行講述。一些說明性的分析問題以及 MATLAB 和 SPICE 設(shè)計(jì)示例點(diǎn)綴在全書的字里行間，以幫助讀者理解本書的內(nèi)容。
標(biāo)簽： 模擬電路
上傳時(shí)間： 2022-02-14
上傳用戶：
The PW2053 is a high-efficiency monolithic synchronous buck regulator using a constantfrequency, current mode architecture. The device is available in an adjustable version. Supply currentwith no load is 40uA and drops to <1uA in shutdown. The 2.5V to 5.5V input voltage range makesthe PW2053 ideally suited for single Li-Ion battery powered applications. 100% duty cycle provideslow dropout operation, extending battery life in portable systems. PWM/PFM mode operationprovides very low output ripple voltage for noise sensitive applications. Switching frequency isinternally set at 1.2MHz, allowing the use of small surface mount inductors and capacitors. Lowoutput voltages are easily supported with the 0.6V feedback reference voltage
標(biāo)簽： pw2053
上傳時(shí)間： 2022-02-14
上傳用戶：jason_vip1
PW1555 is a programmable current limit switch with input voltage range selection and outputvoltage clamping. Extremely low RDS(ON) of the integrated protection N-channel FET helps toreduce power loss during the normal operation. Programmable soft-start time controls the slew rateof the output voltage during the start-up time. Independent enable control allows the complicatedsystem sequencing control. It integrates the over-temperature protection shutdown andautorecovery with hystersis
標(biāo)簽： pw1555
上傳時(shí)間： 2022-02-14
上傳用戶：
能源短缺和環(huán)境惡化是人類共同面臨的挑戰(zhàn)。開發(fā)新型清潔能源是解決能源短缺和環(huán)境惡化的捷徑，但是太陽能能源不連續(xù)和不穩(wěn)定的缺點(diǎn)影響其單獨(dú)使用的效果。為了解決這個(gè)問題，可以選擇使用多種性質(zhì)互補(bǔ)的能源聯(lián)合供電，相互彌補(bǔ)彼此的不足，以達(dá)到連續(xù)穩(wěn)定的電能輸出。基于雙輸入直流變換器（Multipk-Input Converter，MC）的光電互補(bǔ)系統(tǒng)相對于風(fēng)光互補(bǔ)系統(tǒng)而言，在太陽能功率充足時(shí)，可以選擇將多余的能量進(jìn)行并網(wǎng)，省去了蕃電池等儲能設(shè)備，也可大大節(jié)約成本，簡化控制：而且電網(wǎng)是全天候的，比純新能源聯(lián)合系統(tǒng)更加可靠。因此本文將對光電互補(bǔ)系統(tǒng)，研究其拓?fù)洹⒛芰抗芾砗拖到y(tǒng)參數(shù)設(shè)計(jì)等等在隔離應(yīng)用的中小功率場合，推挽變換器控制方便，結(jié)構(gòu)簡單，應(yīng)用廣泛傳統(tǒng)的多輸入推挽變換器結(jié)構(gòu)復(fù)雜，成本高。通過分析MIC的生成方法，利用脈沖電壓源 Pulsating Voltage Source Ce，PⅤSC或者脈沖電流源（Pulsating Curren Source Cell，PCSC）中聯(lián)或者并聯(lián)構(gòu)成簡單實(shí)用的一族多輸入推挽變換器，詳細(xì)分析了BUCK型PVSC串聯(lián)構(gòu)成的雙輸入推挽變換器的小信號模型和控制方式，為了能夠提供交流輸出，本文還詳細(xì)分析了半橋逆變電路的控制方式，并推導(dǎo)出其數(shù)學(xué)控制模型通過分析系統(tǒng)的工作模式、能量管理策略和不同控制方式對系統(tǒng)的影響，闡叨基于雙輸入推挽變換器的光電互補(bǔ)系統(tǒng)的工作原理。并對系統(tǒng)軟件涉及到的太陽能最大功率跟蹤、光電互補(bǔ)控制和逆變控制等算法進(jìn)行重點(diǎn)研究功率電路參數(shù)設(shè)計(jì)合理與否，直接影響著系統(tǒng)的性能和指標(biāo)，其中推挽變壓器和濾波器的參數(shù)設(shè)計(jì)尤為重要，為此專門給出了硬件參數(shù)設(shè)計(jì)步驟；然后，根據(jù)軟件算法，設(shè)計(jì)了控制軟件流程圖來更清晰的表達(dá)軟件控制的思想軟件參數(shù)是影響系統(tǒng)魯棒性和快速性的另一個(gè)關(guān)鍵因素，在硬件設(shè)計(jì)的基礎(chǔ)上，對軟件參數(shù)進(jìn)行優(yōu)化設(shè)計(jì)，并利用 Simulink軟件對設(shè)計(jì)參數(shù)進(jìn)行仿真分析和修正。然后采用TMS320F2809作為控制芯片，搭建了實(shí)驗(yàn)原理樣機(jī)，并進(jìn)行了相關(guān)驗(yàn)證實(shí)驗(yàn)
標(biāo)簽： 推挽變換器
上傳時(shí)間： 2022-03-16
上傳用戶：
隨著光伏發(fā)電系統(tǒng)快速發(fā)展,以及電動汽車充電樁的普及,傳統(tǒng)的剩余電流保護(hù)器無法滿足實(shí)際需求。介紹了一款B型剩余電流保護(hù)器,采用磁調(diào)制剩余電流互感器和零序電流互感器采集剩余電流。根據(jù)GB/T 22794—2017標(biāo)準(zhǔn)要求,可識別1 kHz及以下的正弦交流、帶和不帶直流分量的脈動直流、平滑直流等剩余電流信號。經(jīng)信號調(diào)理電路將電壓信號送到單片機(jī)進(jìn)行采集和判斷。通過試驗(yàn)測試,該樣機(jī)在測試精度和速度上均符合國家標(biāo)準(zhǔn)的相關(guān)要求。The rapid development of photovoltaic power generation systems and the popularity of electric vehicle charging piles make the traditional residual current protective devices unable to meet the actual demand.This paper proposed a type B residual current protective device,which uses the magnetically modulated residual current transformer and the zero sequence current transformer to acquire the residual current.According to the requirements of GB/T 22794—2017,the type B residual current protective device can detect sinusoidal AC residual current of 1kHz and below 1kHz,pulsating DC residual current with and without DC component,smooth DC residual current and so on.The signal processing circuit sends the voltage signal to the MCU for acquisition and judgment.Through experimental tests,the device meets the relevant requirements of national standards in terms of test accuracy and speed.
標(biāo)簽： 電流保護(hù)器
上傳時(shí)間： 2022-03-27
上傳用戶：
配電網(wǎng)中,各種配電終端的電流、電壓、有功功率及無功功率等模擬量的采集是配電網(wǎng)自動化的重要環(huán)節(jié)。這些模擬量的采集也是各種儀器和家用電器的必要功能。因此,設(shè)計(jì)了基于嵌入式STM32F103單片機(jī)的交流電壓、交流電流及有功功率的采集系統(tǒng),通過電壓互感器TV1005M和電流互感器TA1005M分別檢測交流電壓和交流電流值;屏幕或者手機(jī)APP和WiFi模塊互聯(lián)后,可以實(shí)時(shí)顯示交流電壓、交流電流、功率及電量值;通過設(shè)定閾值功率,可以實(shí)現(xiàn)對電流的監(jiān)控和對電路的保護(hù)。In the distribution network,the collection of analog,such as current,voltage,active power,and reactive power at various distribution terminals is a very important part of distribution network automation. These analog acquisitions are also for various instruments and household appliances. Very important technology. Therefore,an AC voltage,AC current and active power acquisition system based on embedded STM32 F103 machine is designed,and AC voltage and AC current values are detected by voltage transformer TV1005 M and current Transformer TA1005 M respectively;After the screen or mobile phone APP and WiFi modules are interconnected,AC voltage,AC current,power,and power values can be displayed in real time;By setting the threshold power,the current can be monitored and the circuit can be protected.
標(biāo)簽： stm32f103 單片機(jī) 電流電壓采集
上傳時(shí)間： 2022-03-27
上傳用戶：shjgzh
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.
上傳時(shí)間： 2022-03-27
上傳用戶：
設(shè)計(jì)了自動控制系統(tǒng)綜合實(shí)驗(yàn)案例“基于LabVIEW和單片機(jī)的溫度控制系統(tǒng)設(shè)計(jì)”。實(shí)驗(yàn)系統(tǒng)硬件部分由單片機(jī)、溫度傳感器、D/A轉(zhuǎn)換模塊、調(diào)壓模塊和電烤箱組成,設(shè)計(jì)了單片機(jī)與各個(gè)模塊之間的接口電路。軟件部分采用LabVIEW軟件實(shí)現(xiàn)控制算法,并設(shè)計(jì)監(jiān)控界面實(shí)現(xiàn)參數(shù)設(shè)定、溫度數(shù)據(jù)實(shí)時(shí)監(jiān)控等功能。設(shè)計(jì)了單片機(jī)與LabVIEW軟件之間的串口通信程序,實(shí)現(xiàn)了輸入、輸出數(shù)據(jù)的傳輸。通過綜合實(shí)驗(yàn)系統(tǒng)設(shè)計(jì),使學(xué)生得到控制系統(tǒng)設(shè)計(jì)和實(shí)驗(yàn)調(diào)試等綜合能力的訓(xùn)練。A comprehensive experimental case of the automatic control system is presented,which is the design of the temperature control system based on LabVIEW and SCM.The hardware part of the experimental system is composed of the SCM,temperature sensor,D/A conversion module,voltage regulating module and electric oven.The interface circuit between the SCM and each module is designed.In the software part,LabVIEW software is used to realize the control algorithm,and the monitoring interface is designed to realize the functions of parameter setting,temperature data real-time monitoring,etc.The serial communication program between the SCM and LabVIEW software is designed to realize the transmission of input and output data.Through the design of this comprehensive experimental system,students can get the comprehensive ability training for the control system design,experiment debugging,etc.
標(biāo)簽： labview 單片機(jī) 自動控制系統(tǒng)
上傳時(shí)間： 2022-03-27
上傳用戶：qdxqdxqdxqdx
近距電能傳輸——高效安全近距電能傳輸一般基于電磁感應(yīng)原理進(jìn)行。在此技術(shù)基礎(chǔ)上，當(dāng)接收器鄰近發(fā)射器時(shí)才會進(jìn)行電能傳輸。電磁感應(yīng)技術(shù)的歷史長達(dá)百年，多年米一直應(yīng)用于各類電子產(chǎn)品中—如此普及全因其簡單、高效以及安全技術(shù)概覽以下將為你簡要介紹無線電能傳輸技術(shù)。System Overview(Communication)Receiver sends messagesTo provide control information to the transmitterBy load modulation on the power signaTransmitter receives messagesTo receive control information frorn the recelverBy de-modulation of the reflected loadPower Pick Up( Receiver)Secondary coil (L Serial resonance capacitor (C) for efficient power transfer Parallel resonance capacitor(C, )for detection purposes Rectifier: full bridge(diode, or switched)+ capacitor Output switch for(dis)connecting the loadReceiver modulates load by Switching modulation resistor(R,n),or Switching modulation capacitor(Ca)Transmitter de-modulates reflected load by Sensing pnmary coil curent (p)and/o Sensing primary coil voltage (V,
上傳時(shí)間： 2022-03-31
上傳用戶：
設(shè)計(jì)功率MOSFET驅(qū)動電路時(shí)需重點(diǎn)考慮寄生參數(shù)對電路的影響。米勒電容作為MOSFET器件的一項(xiàng)重要參數(shù),在驅(qū)動電路的設(shè)計(jì)時(shí)需要重點(diǎn)關(guān)注。重點(diǎn)觀察了MOSFET的開通和關(guān)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(shù)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(chǎn)生振蕩的原因,并提出了抑制措施,對功率MOSFET的驅(qū)動設(shè)計(jì)具有一定的指導(dǎo)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(biāo)簽： mosfet
上傳時(shí)間： 2022-04-02
上傳用戶：默默
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