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测试测量 基于Multisim 10的矩形波信号发生器仿真与实现
在Multisim 10软件环境下，设计一种由运算放大器构成的精确可控矩形波信号发生器，结合系统电路原理图重点阐述了各参数指标的实现与测试方法。通过改变RC电路的电容充、放电路径和时间常数实现了占空比和频率的调节，通过多路开关投入不同数值的电容实现了频段的调节，通过电压取样和同相放大电路实现了输出电压幅值的调节 ...
电子元器件应用 LED升压器 QX5305 中文资料
QX5305 是一款高效率，稳定可靠的高亮度LED灯驱动控制IC，内置高精度比较器，off-time控制电路，恒流驱动控制电路等，特别适合大功率，多个高亮度LED灯串恒流驱动。 QX5305采用固定off-time控制工作方式，其工作频率可高达2.5MHz，可使外部电感和滤波电容、体积减少，效率提高。 在DIM脚加PWM信号，可调节LED灯的亮度。 通 ...
编辑器/阅读器 TheTool is highy customizable map editor(based on QT) which can be extended via LUA scripts. A first
TheTool is highy customizable map editor(based on QT) which can be extended via LUA scripts. A first implentation is ready and can be published to the public. The editor is the perfect tool who wants to design some 3d games but don t have time to write
Java编程 URL编程例子
URL编程例子，通过IP获取计算机名字。运行方法：1. Compile: javac GetHost 2. Run: java GetHost 111.111.111.1(your IP or others)
通讯/手机编程 a very simple program that prints "Hello World" to the serial port of the 8051. When you can success
a very simple program that prints "Hello World" to the serial port of the 8051. When you can successfully build and run this program, you have used the entire toolset including:
FlashMX/Flex源码 dances Act now and you ll be given a free membership to a top Internet firm who is changing people s
dances Act now and you ll be given a free membership to a top Internet firm who is changing people s lives for the better.Mary L. White of LA. stays at home with her children and works just 3 1/2 hours a day... she now earns twice as much money as she did before. Frank Herns Jr. of NY takes 2 vacati ...
人工智能/神经网络 最新的支持向量机工具箱
最新的支持向量机工具箱，有了它会很方便 1. Find time to write a proper list of things to do! 2. Documentation. 3. Support Vector Regression. 4. Automated model selection. REFERENCES ========== [1] V.N. Vapnik, "The Nature of Statistical Learning Theory", Springer-Verlag, New York, ISBN 0-387-94559-8, ...
Java编程 JAVA开发的日期控件
JAVA开发的日期控件，带星期的，可以录入又可以自动选择，内附手册及示例，支持time型。
uCOS 介绍几种cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducin
介绍几种cpuThe 8xC251SA/SB/SP/SQ improves on the MCS-51 architecture and peripheral features, introducing the advanced register based CPU architecture i.e., the MCS 251 microcontroller architecture. The register based CPU supports a 40-byte register file. In addition, the 8xC251SA/SB/SP/SQ microcont ...