gitcloud-
这就是因为主力提前告诉了别人自己准备把海螺水泥的价格打到40.99，而前一天的收盘价格是45.54，对于不知道这个阴谋的投资人来说是无论如何也想不到2009.11.20的海螺水泥最低能跌到40.99，而对于知道内幕、提前挂好的单的人来讲，这是块肥肉。
如此，主力把瞬间把价格打到40.99，成交了那5.92W股。由于买进的价格极低，在盘中触及48.51元时，买进的人获利18.34%！
最后以46.99收盘计算，但获利依然高达14.63%！
这就是老鼠仓！往严重了说，这种操作方法是违法的！属于违规操作！它的操作原理是：庄家在用公有资金在拉升股价之前，先用自己个人（机构负责人，操盘手及其亲属，关系户）的资金在低位建仓，待用公有资金拉升到高位后个人仓位率先卖出获利。
tt白-
Active-clamp single-ended forward zero-voltage soft-switching technology
Side working condition, due to the symmetry of wl and w2, c point potential remains U / 2. In the half-bridge operation, the first opening of the tube if VFl Cb charge, c point potential from the U. / 2 rise, but not more than U; vF2 tube opened, by ca discharge, taking into account the wl, w2, and on-time symmetry, c point potential back to U. / 2. Therefore, c-point potential for the interval [uj2 ... U] the change in volume. If the first opening of the C v tube charge, c point potential for the interval [0, Ui / 2] the change in the single-ended working condition exists VF, VF2-off period to ask the process to the magnetic core, capacitor C, Cb"s joined to the magnetic circuit has added a new channel, significantly reducing the demagnetization time. This design can improve the core of the duty cycle D, improve material utilization. C, Cb determines the output of electric energy capacity than the working status of single-ended forward more than a limited part of the energy. 5 products instances 130A inverter welding machine, using a single-ended working condition. Total weight 9kg, core,ugg batai, low cost, stable and reliable welding. 6 Conclusion and practical single-ended circuit working condition, half-working state and mixed state of two kinds of work topology, four different operation modes. Each state has its own specific work characteristics of the work. In addition to the practice shown to reduce costs, improve cooling,uggs nederland, reduce the quality of the features,ugg outlet, the circuit also improving security, eliminating the possibility of half-bridge circuit through Sui, improved single-ended circuit core reset conditions. In the single-ended operation,ugg australia, the midpoint c of the potential for the U. / 2; in half-working state, c is the point of potential change, changes in scope and VF. ,uggs belgique, VF2 the opening sequence of the tube. In particular, the circuit than the traditional single-ended, half-bridge, full bridge circuit,uggs kopen, one more circuit nodes, not only did not reduce efficiency, and improve the range of safe and reliable. This expansion of high-power circuits, in addition to parallel work and are outside the control of flow provides a new way of thinking. From the topology point of view,uggs outlet, the circuit is between 1 and 2 Buck converter with a Buck converter topology. According to the different control circuits, can switch between the two,ugg lietuvoje, so not only improves the safety, design redundancy is also increased. References: [1] RUAN Xin-bo Yan Yangon. DC switching power supply soft switch technology [M], Beijing: Science Press, 2OOO. [2JNC ~ ano,, "ie, DBoro) ~ e. Aeh. Aoxd which studyofneutral-pol [Il-,, oltageboisei ): 2,: 12 a. Page15 chat and more cases, it must be considered. freewheeling 5.3 transformer secondary side inductance L2. L2 smaller the transformer secondary side current, the greater the slope of rising and falling, so In the main switch turns on the transformer primary side of the slope of current rise followed increases, the direct effect of the output current is unchanged during the main switch turns on, the final value increases, the absolute value of the resonant initial current slightly larger, soft-switch will be easy to achieve, of course L will result in reduced volatility in the secondary side current becomes large,uggs online bestellen, causing the current is not continuous. 6 Conclusion a. Single-ended forward active clamp circuit to achieve soft-switching inverter primary condition is the auxiliary switch off when the transformer primary side resonant circuit initial current is large enough, and the circuit parameters to meet the style (1O). b. deadtime r2 must be according to equation (13) a reasonable choice. a 2O ? c. transformer side of the inductor zero-voltage soft-switching range of great influence, too little current can not achieve the soft switching, too affected the maximum output power, so the output current range should be selected according to the appropriate value in the inverter design through the establishment of appropriate simulation models for computer simulation,ugg batai lietuvoje, can easily simulate the working process of the circuit, test circuit design is reasonable, to reveal the circuit regularity and refer to the actual circuit simulation results to determine the main parameters that can greatly reduce the experimental work cycle and cost. References: [1] BI Qiang PWM forward zero-voltage soft-switching and power [J. Power Electronics, 1994,28 (4) :10-12: 2: Dao Lian, Yan Yangon zero-voltage transition PwM forward converter principle and design [J] Power Electronics, 1998.32 (4) :22-25.
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瑞瑞爱吃桃-
这个问题是09年的事，对于这个问题我们只有借鉴作用