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爬虫爬取高德地图POI数据
python代码，爬虫爬取高德地图POI数据，先注册高德个人账户，获取所需要的key，替代代码中的key，然后更改省市，更改想要的数据类型，python运行即可得到xlse数据
- 2020-11-30下载
- 积分：1
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svg 仿真五个h桥级联
svg 仿真五个h桥级联，仿真很清晰，看的很清楚，欢迎下载，不明白的欢迎交流
- 2020-11-28下载
- 积分：1
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MATLAB实现电力系统牛顿拉弗逊法潮流计算代码
MATLAB实现电力系统牛顿拉弗逊法潮流计算此代码简单易懂，而且加了注释。对于学习电力系统计算机计算潮流和毕业设计很有帮助，
- 2020-11-02下载
- 积分：1
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模仿QQ实现的聊天软件（可当做java大作业）
运用并发，网络编程，数据库，和swing综合写的聊天项目，模仿QQ页面，适合初学者学完javase之后的巩固，也可直接当做java大作业提交，其中数据库是Oracle，需要修改对应的数据库sql语句。驱动自行更改。
- 2020-06-25下载
- 积分：1
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车辆分类检测正负样本共计1000张
车辆分类检测的正负样本，其中正样本500，负样本500，可以用来做OPENCV的分类器检测训练，低分提供给大家，欢迎下载训练
- 2020-12-06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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在线试题库系统的设计与实现
随着网络技术的飞速发展，现在很多国外的大学和社会其他部门都已经开设了远程教育，通过计算机网络实现异地教育和培训。当前，计算机硬件技术的发展已经达到了相当高的水平。但是，远程教育软件的开发目前还处于起步阶段，随着这项技术的不断深入发展，就要求有更好、更完善的软件系统应用到远程教育当中去，这就给软件设计人员提出了更高的设计要求。
- 2020-11-27下载
- 积分：1
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MT+CTP程序化交易软件V2.4用MT4的EA做国内期货
【实例简介】MT4+CTP程序化交易软件,下载文件Program Files.rar,
放在D:Program Files
右键单击,解压到当前文件夹,解出程序文件夹"MT+CTP600"和说明书.
把D:Program FilesMT+CTP600中的3个快捷方式：“MT+CTP600”和“MT+CTP600 MetaEditor”，以及“ MT+CTP工具软件”拷贝粘贴到windows桌面
注意:
要确保路径正确,否则快捷方式无效
要通过快捷方式启动才能使行情数据与程序在相同的文件夹,否则MT4会自动在C:UsersAdministratorAppDataRoamingMetaQuotes下面创建数据文件夹,那就麻烦大了(MQL4,history等各种数据,包括子目录要移到数据文件夹).
- 2021-10-29 00:31:13下载
- 积分：1
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《电磁场与电磁波》谢处方第4版课后习题答案
《电磁场与电磁波》谢处方第4版课后习题答案（完整）
- 2020-03-19下载
- 积分：1
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Gammatone滤波器
完整的语音处理matlab程序。demo为利用ERB Gammatone 滤波器对语音信号进行处理。可以提取基于听觉感知的特征参数。
- 2020-06-25下载
- 积分：1
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