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WinsockControl
用API函数写的winsock控件源代码.(API function to use the winsock control to write the source code.)
- 2008-07-25 19:29:55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
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ADOdcsj
使用ADO导出数据,在数据库编程中应用很多。(Use ADO export data, many applications in database programming.)
- 2013-12-12 14:18:18下载
- 积分:1
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GOOGLE_TOOL
快速下载、自动纠正、拼接谷歌影像。
需要先装个DotNetFX35、Global Mapper及谷歌地球,向作者要个注册码。开发环境:VB.NET (Google earth tool)
- 2009-12-15 08:06:42下载
- 积分:1
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SOURCE-USB-DEFENDER
SOURCE USB DEFENDER FOR SAFETY YOUR USB
- 2013-12-17 13:29:29下载
- 积分:1
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dafadfa
把一个图标放在系统托盘的实用程序,练习程序,请多指教(Put an icon on the system tray utility program, exercise program, like him Zhijiao)
- 2010-01-03 10:49:25下载
- 积分:1
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SkinBuilder
皮肤制作工具,皮肤制作工具,皮肤制作工具(skin produtedd,skin produteddskin produtedd,skin produtedd,skin produtedd,,)
- 2014-02-24 14:54:44下载
- 积分:1
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DLL
creating standard dll in VB
- 2020-07-10 21:28:54下载
- 积分:1
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Perfectwored
完美练级外挂。VB源码,注释很全面,值得学习,个人觉得很不错,(Perfect leveling plug. VB source code, comments, very comprehensive, it is worth learning, personal feel very good,)
- 2010-05-19 21:22:57下载
- 积分:1
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mcisendstring
小眼使用VB API"mciSendString"制作功能强大的音乐播放控件,可以播放MP3,WAV,MID等格式的音乐。控件的属性和方法包括:播放,暂停,停止,获取总时长,获取当前播放进度,设置播放进度,设置音量大校可以以他为内核制作一个十分强大的播放器(Small eyes using VB API "mciSendString" making powerful music player controls, can play MP3, WAV, MID and other music formats. Properties and methods of control include: play, pause, stop, get the total length, get the current playback progress, set the playback progress, set the volume for the kernel colonel can make him a very powerful player)
- 2014-05-15 11:16:45下载
- 积分:1