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200562354863985
可以实现的USB的通信,并且有一个简单的界面个供开发人员参考,值得阅读(Can be achieved USB communications, and a simple interface for developers of reference, it is worth reading)
- 2009-01-03 10:04:15下载
- 积分:1
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VB代码管家_201500722【源代码】
说明: 各种编程说明,很多控件的用法,以及很多实用的小程序(Various programming instructions
The use of many controls, as well as many practical applets)
- 2019-03-12 09:08:57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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4637354
Windows音频音量控制实例VB代码,有需要的下。(Windows VB code, audio volume control instance in need.)
- 2013-08-19 08:37:33下载
- 积分:1
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LinerLayout
VB版的布局控件,可以像其他高级语言一样布局了,这只是一个简单的例子,可以继续完善(VB version of the layout of the control, you can be like other high-level language layout, this is just a simple example, you can continue to improve)
- 2015-12-17 22:04:36下载
- 积分:1
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beijiStockSystem
一个VB.NET编写的股票分析系统,包括K线的显示及RSI指标的显示。(A vb.net write stock analysis system, including K line display and RSI display index.
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- 2020-07-02 23:40:01下载
- 积分:1
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mega8
Programer for Amega8,Amega16 AVRMCU
- 2009-05-10 20:59:40下载
- 积分:1
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TBPrinter
tribon二次开发 批量打印程序源码 供大家参考(tribon second development batch printing program source code for your reference)
- 2013-07-26 22:55:29下载
- 积分:1
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10
完美国际外挂代码,用VB编写,功能齐全.rar(Perfect international plug-in code, using VB, fully functional. Rar)
- 2013-07-13 14:09:54下载
- 积分:1
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banking-system
The uploaded source code is a window based application for developing "Banking System" using Visual basic as front end and MS-Excel as back end.
This project is an implementation of simple tasks that occur during transactions in a bank.
Since it is in visual basic, it is very simple to understand.
- 2014-01-23 16:10:30下载
- 积分:1