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本文講述了一個基於FAN4800 連續PFC 前端的雙管正激電源的功率級設計。回顧了這種電源的設計選擇。討論的實際課題包括功 率器件選型，電磁設計，佈局和電磁干擾 (EMI)，目的在於幫助工程師加速並改善其設計。(This article about a front-end based on the FAN4800 PFC consecutive two-transistor forward power stage power supply design. Review this power supply design options. The actual topics discussed include the selection of power devices, electromagnetic design, layout, and electromagnetic interference (EMI), designed to help engineers to speed up and improve its design.)

Fminsearch不承认的约束限制。 不过简单的转换方法存在 转换成一个绑定的约束问题 无约束问题。 Fminsearchbnd用于酷似fminsearch， 除了边界应用到变量。 应用于国内的界限，利用 改造中的变量。 （二次型 单式，双罪恶界（十）。） 具有包容性的不平等的界限，它承认 边界值本身，但不准 在所有函数之外的范围评估。 请注意，fminsearchbnd允许用户准确地固定在某个给定值通过设置一个变量的确切范围相同的值。(Fminsearch does not admit bound constraints. However simple transformation methods exist to convert a bound constrained problem into an unconstrained problem. Fminsearchbnd is used exactly like fminsearch, except that bounds are applied to the variables. The bounds are applied internally, using a transformation of the variables. (Quadratic for single bounds, sin(x) for dual bounds.) The bounds are inclusive inequalities, which admit the boundary values themselves, but will not permit ANY function evaluations outside the bounds. Note that fminsearchbnd allows the user to exactly fix a variable at some given value, by setting both bounds to the exact same value.)

中值滤波和它的改进 自己实现的 可能比较粗略 matlab2013运行通过(Median filter and it is possible to achieve improved their sketchy matlab2013 run through)

可以计算两个数的和的matlab程序，有界面(GUI code which can compute the sum of two numbers)

This simulation illustrates the current and voltage buildup in a self-excited dc shunt generator driven at constant speed.Examine the effects of: a) changing the residual voltage magnitude and polarity (vres) b) varying the field resistance Rf =[145 200 250 300 350] c) varying the load conductance GL=[0.16 0.5 ] d) changing the field inductance Lf e) modifying the armature parameters Ra and La

用Mathematica写的一个基于分水岭的图像分割算法，过程很详细。(Using Mathematica write a watershed-based image segmentation algorithm, the process in great detail.)

用谱减法实现语音的降噪，经典的谱减法完整源代码。(Of voice with spectral subtraction noise reduction, spectral subtraction classic full source code.)

双重积分,用于matlab的，经过测试可用。(dual integer ,i used ,it can be use freely)

GMVQ算法，stanford大学Gray先生经典之作(GMVQ algorithm, stanford University of Mr. Gray for the classic)

窄带信号単快拍测向 通过平滑 提高信噪比 (Narrowband signals and single-snapshot direction finding Improve the signal to noise ratio by smoothing)