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CPPtrining
华为C++中级培训教材,吐血奉献,挺好的资料。(huawei C++ trining)
- 2011-11-23 23:06:59下载
- 积分:1
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DataPro
采用MFC框架,输入相应函数,画出函数曲线(Draw the curves according to the function you put in.)
- 2015-03-07 22:04:03下载
- 积分:1
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SalesManager
销售管理系统。
数据库:ACCESS
前台:VB.NET(Sales Manager System)
- 2021-01-18 11:08:43下载
- 积分:1
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market
市场薪酬调查分析系统,录入调查岗位、岗位点数、薪酬,自动生成调查表和调查曲线(Market salary survey and analysis system, entry survey post, post points, pay, automatic questionnaires and survey curves)
- 2017-05-23 21:44:01下载
- 积分:1
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TCPIP
modbus 测试,用VB的winsock控件实现的modbus tcpip通讯等(modbus test, with VB the winsock control to achieve the modbus tcpip communications)
- 2021-04-06 17:59:02下载
- 积分:1
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aclock_src
说明: 一个日历程序用MFC写的。 一个日历程序用MFC写的。 一个日历程序用MFC写的。(A calendar program written using MFC. A calendar program written using MFC. A calendar program written using MFC.)
- 2008-10-01 22:39:46下载
- 积分:1
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calculator2
实现计算器功能,还有漂亮的界面 ,使用VC6.0 mfc实现(calculator)
- 2010-01-06 08:53:14下载
- 积分:1
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VCdeepdemastrationcode1-6
VC深入详解的随书源码,第1章到第6章全部示例(VC++ in-depth Xiangjie-demand book source code, Chapter 1- Chapter 6 All samples)
- 2009-09-10 16:48:37下载
- 积分:1
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CPPSRC-by-tricksr.ZIP
CPPSRC by tricksrone program scpirt for vbCPPSRC by tricksrone program scpirt for vb(CPPSRC by tricksrone program scpirt for vb)
- 2013-07-15 09:11:52下载
- 积分:1
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ProjExtend
中频感应加热以其加热效率高、速度快,可控性好及易于实现机械化、自动化等优点,已在熔炼、铸造、弯管、热锻、焊接和表面热处理等行业得到广泛的应用。
本设计根据设计任务进行了方案设计,设计了相应的硬件电路,研制了20KW中频感应加热电源。
本设计中感应加热电源采用IGBT作为开关器件,可工作在10 Hz~10 kHz频段。它由整流器、滤波器、和逆变器组成。整流器采用不可控三相全桥式整流电路。滤波器采用两个电解电容和一个电感组成Ⅱ型滤波器滤波和无源功率因数校正。逆变器主要由PWM控制器SG3525A控制四个IGBT的开通和关断,实现DC-AC的转换。
设计中采用的芯片主要是PWM控制器SG3525A和光耦合驱动电路HCPL-316J。设计过程中程充分利用了SG3525A的控制性能,具有宽的可调工作频率,死区时间可调,具有输入欠电压锁定功能和双路输出电流。由于HCPL-316J具有快的开关速度(500ns),光隔离,故障状态反馈,可配置自动复位、自动关闭等功能,所以选择其作为IGBT的驱动。
对原理样机的调试结果表明,所完成的设计实现了设计任务规定的基本功能。此外,为了满足不同器件对功率需要的要求,设计了功率可调。这部分超出了设计任务书规定的任务。(induction heating with high heating efficiency, speed and good controllability and easy to mechanization. the advantages of automation, in melting, casting, bending, forging, welding and surface heat treatment and other industries have been widely employed. According to the design tasks for the design of the program design, design corresponding to the hardware circuit, Development of 20 KW induction heating power. The design of induction heating power IGBT used as a switching device, which can work in 10 Hz- 10 kHz frequency band. It consists of rectifier, filter, and the inverter components. Controlled Rectifier not use the entire three-phase bridge rectifier circuit. 2 filter used an electrolytic capacitor and inductor components II-type filter and passive PFC. Inverter mainly by the PW)
- 2007-04-19 11:31:35下载
- 积分:1