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QT的QML 非常好的例子
有QT 5可以运行成功的QML的界面实例 带有登陆界面和界面切换功能
- 2020-12-05下载
- 积分：1
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英飞凌IGBT驱动培训资料
在电力电子装置中的一个重要组成部分,输入连接到控制电路的PWM信号输出端，输出连接到装置各IGBT的门极和发射极，将装置中的控制电路产生的数字PWM信号进行隔离传输和电平转换和功率放大,实现控制电路对IGBT进行开通和关断动作的控制，从而实现装置的功率变换功能。InfineontechnologiesIGBT Gate Drive: Power Suppliesa Gate driving voltage for IGBT+15Vturn-on is normally +15VDriver>□1a Gate driving voltage for IGBTOVturn-off can be oV or negativeWith Single Power Supply5V to-15V)a Negative gate driving voltage+15Vhelps IGBt switch off fasterremain in off state but itDriverneeds dual power suppliesOVWhether to use oV or negativegate driving voltage depends15VWith Dual Power Supplieson the requirement on costZH Liang - Al APperformance05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: InterfaceOpto-couplers is commonly used as interfacingdevices for applications where both signaltransmission and potential isolation are requiredOpto-couplers offers reliable isolation between IGBT(high-potential)& micro-controller(low-potential)Opto-couplers has long signal delay(us)and isexpensiveIsolation +VDpCCMicroDrivercontrollerZH Liang - Al AP05Dec2003Page 6for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveStandard configuration: 2 drivers, 2 power supplies, 2 opto-couplersAdvantages: standard, reliableDisadvantages: using opto-couplers, higher system costIsolation +VDDlCC1DriverCC1MicrocontrollerDD2+VCC2DriverCC2ZH Liang - Al AP05Dec2003Page 7for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Half-bridge DriveIn half-bridge IGBT drive, opto-couplers offer two functions(1)safety isolation &(2) shifting the potential of the gatesignal from uc potential to high-side potentialIf safety isolation between IGBT& micro-controller is notneeded, then"Level Shift" can replace opto-coupling andrealize function(2)OptoHigh-sideHigh-sidecouplerDriverIGBTMicro-Opto-LoW-sideLow-sidecontrollercouplerDriverIGBTZH Liang - Al AP05Dec2003Page 8for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive Level shiftI FeaturesHVc(600V/1200V)沿PULSERFILTERShort Signal DelayPULSE■Cost- effectiveGEN■ No Safety Isolationevel Shift Half-bridge DriverI BenefitHigh-side““°IGBTO Saving Opto-couplersLevel(lower system costShiftMicro● Wider range ofcontrollerLevelLow-side■■■■■直■口m留■Switching FrequencyShiftIGBT(higher flexibility)ZH Liang - Al AP05Dec2003Page 9for internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: CLTNEWO CLT-Coreless Transformer (for signal transmissionu Coils(Primary Secondary Side)realized on SiliconO Short Signal Delay (allowing high or low switching frequencyu Lower Cost(compared to 1200V level-shift driver日 Safety IsolationCLT Half-bridge DriverHigh-sideCLT Single DriverIGBTCLTMicro-controllerCLTIGBTMicro-controllerLoW-sideIGBTZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strapBoot-strap circuit includes only a diode and a capacitora In half-bridge drive, the boot-strap circuit can replace the high-sidepower supply and make single-supply operation possibleWhen the low-side IGBT (or FWD)is on, the diode is forwardbiased and the capacitor is charged by the low-side power supplyvia the low-side IGBT and stores the energyWhen the low-side IGBt(and FWD)is OFF, the diode is reversebiased and blocks the dc-bus voltage to protect the low-sidecircuit. Meanwhile, the capacitor supplies energy to the high-sidedriverThe boot-strap capacitance should be high enough to keep thesupply voltage stable Capacitance needed can be calculatedbased on the working conditions and device parametersZH Liang - Al AP05Dec2003agefor internal use onlyInfineon Technologies Asia PacificInfineontechnologiesIGBT Gate Drive: Boot-strap circuitConventional2心菲*|■3 high-side power supplies■1|oW- side power supplyUsing boot-strap circuit心体心心●3 diodes& capacitorso 1 low-side power supplyFeaturesa Diode: ultra-fast recoverya Capacitor: general-purposed ITAa Dependent on low-side IGBTBenefitsSaving 3 PS(transformer cost)22ZH Liang - Al AP05Dec2003Reducing wiring connectionPage 12for internal use onlyInfineon Technologies Asia Pacific
- 2020-12-11下载
- 积分：1
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5G NR标准文件：3GPP TS 38.521-2 version 15.0.0 Release 15.pdf
1、http://www.3gpp.org/DynaReport/38-series.htm；2、5G NR标准文件：3GPP TS 38.521-2，用户设备(UE)符合性规范;无线电收发;第2部分:Range 2单机
- 2020-12-07下载
- 积分：1
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Greenfoot小游戏合辑
本人编写的一些Greenfoot小游戏，可以作为学习java游戏编程的参考。使用方法：安装Greenfoot，然后直接打开gfar项目文件Greenfoot软件可在官网下载：www.greenfoot.org
- 2020-12-06下载
- 积分：1
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用MFC实现折线图，柱形图，饼图
根据MFC建立一个单文档，弹出对话框，在对话框中输入相应的数据，点击确定，在视图上出现相应的折线图，柱形图和饼图。
- 2020-12-04下载
- 积分：1
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个人理财系统c#+sql【含文档】
小的课程设计，c#+sql 如何运行里面有详细说明 包含源代码+文档设计内容1、 账户管理2、 收支管理3、 借贷管理4、 信息查询和统计
- 2020-11-30下载
- 积分：1
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matlab聚类工具箱
聚类分析Matlab工具箱 Version1.0Clustering Analysis Matlab Toolbox - Trial Version 1.0%------------------------------------------------------------------------------1、该工具箱包括了常用的三种K-Means聚类分析和ISODATA聚类分析:...KMeansMain_KMeans.m % 标准 K-Means 聚类 - 主函数...KMeansMain_FuzzyKMeans.m
- 2020-12-06下载
- 积分：1
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运用STM32F407写的FFT，分辨率是1Hz。可以测量信号频率，以及谐波分析，失真度。另外还可以测量两个波形的相位差
运用STM32F407写的FFT，分辨率是1Hz。可以测量信号频率，以及谐波分析，失真度。另外还可以测量两个波形的相位差
- 2020-07-01下载
- 积分：1
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imtoken安卓客户端源码 含btc eos eth实现
imtoken安卓客户端源码 含btc eos eth 转账 创建地址 开源免费
- 2020-12-02下载
- 积分：1
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《Convex Analysis and Optimization》凸分析与最优化-中科大讲义
《Convex Analysis and Optimization》凸分析与最优化-中科大讲义 英文0f(a)x∈Cf:R"→Ra∈XX∩{x|h(x)=0∩{xg1(x)≤0,…,g9()≤0}●尺,R+,intR+(R++)R,intR(R平+)>0y29o l c2=valr zloo= max21b, 1r2.,JmItx|p=(∑;=1x+=1
- 2020-12-06下载
- 积分：1
