二极管对

A simulation research is conducted on the example of six-phase double star winding shifted by 30°synchronous motor.In order to investigate the control algorithm of multilevel inverter , high harmonics as well as its problems, a mathematical model of the control algorithm based on the voltage space vector is built. For the first time, the principle along boundary is introduced to confirm the chosen switch state when many switch states are corresponding to the same vector. Simulation analysis and hardware realization are conducted with the combination of diode clamped three-level inverter and five-level inverter.

建立了基于空间电压矢量控制算法的仿真模型；仿真研究中采用对偶小矢量搭配改善中点电位波动的问题；针对多个开关状态对应同一待选矢量的问题引入&循边原则&确定被选择的开关状态；对过调制问题进行了相应的处理：结合二极管嵌位式三电平逆变器和五电平逆变器进行了仿真分析和硬件实现。

Basing on the poission's equation of charge distribution and the transport equation of carriers, and considering the carriers' density of states as the two Gaussian distributions because of the energy disorders of organic molecules, we have studied self-consistently the effect of doping concentration and disordered degree on the mobility of carriers in the Alq3 flexible organic light-emitting diodes.

基于电荷分布的泊松方程和载流子输运方程，考虑最低能量非占据态和最高能量占据态的载流子态密度服从双高斯分布的模型，我们自洽地研究了掺杂浓度和无序对Alq3柔性有机发光二极管载流子迁移率的影响。

Capacitive rectifier, a traditional rectifier for electronics instrument, can result in a lot of input current harmonics, which brings the main to harmonics distortion.

传统电子设备的电源输入端采用二极管整流和电容滤波，其输入电流含有大量的奇次谐波，对电网造成巨大的谐波污染。

It was found the brightness of each primary color LED device has changed with the change of temperature. The different brightnesses result in the distortion of white balance of the image.

通过对RGB三基色发光二极管温度特性的测试和分析发现，随着环境温度的变化，每种基色的LED亮度与常温时的亮度相比都会发生一定程度的偏移，且其偏移量不相同，导致了图像白场平衡的失真。

A chip from the 8255 population of diode switching data collection to simulate day and night, by the flipflop through the 8259 chip to control the street lamp light out.

即由8255芯片A口对二极管的开关数据的采集来模拟昼夜，由触发器通过8259芯片来控制路灯的亮灭。

It was found the brightness of each primary color LED device has changed with the change of temperature.

通过对RGB三基色发光二极管温度特性的测试和分析发现，随着环境温度的变化，每种基色的LED亮度与常温时的亮度相比都会发生一定程度的偏移，且其偏移量不相同，导致了图像白场平衡的失真。

The value of active energy is determined to be 0.82 eV and mean lifetime in practical operation at driving current of 100 mA and an ambient temperature of 298 K is over 106 h, and high reliability and long lifetime required for light source of FOG are confirmed.

计算出了器件的激活能平均值约为0.82 eV，SLD管芯在室温下的工作寿命超过106 h，可以满足光纤陀螺用光源的寿命要求。对影响SLD管芯可靠性的因素以及管芯的退化机理进行了分析，为研制高可靠性的超辐射发光二极管提供了理论基础。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。