switching pulse

The mathematical model of SHE single bipolar pulse control is established and the relationship between different modulation ratio and switching angles to eliminate the 5th and 7th harmonics is presented.

建立了特定谐波消除单、双极性脉冲控制方式的数学模型，给出了消除5次、7次谐波的不同调制比与开关角的关系。

The simulated applications are in driving threshold, state overturn, light transmission rate, the switching and memory behavior of the FLCD for different drive voltage ( including amplitude, pulse wide and duty cycle) and sampling parameters.

通过引入多种激励源，控制激励信号的幅值、脉宽、占空比和取样参数，对FLCD的驱动阈值、状态翻转、透射率、响应时间和记忆行为进行了实时仿真。

In the preliminary experiments the adiabatic expansion efficiency of orifice pulse tube with low temperature switching valve can be higher than 40%. These results show the application prospects of the machine.

对带低温切换阀的小孔气库型脉冲管的等熵膨胀效率的初步实验结果表明，其等熵效率可达40%以上，显示了一定的应用前景。

Therefore, we use unipolar switching pulse width modulation scheme to realize a filterless Class-D power amplifier.

因此, 我们利用单极性切换脉波宽度调变技术去实现无滤波器之D类放大器.

A New Type of Refrigerator: Pulse Tube Refrigerator with Low Temperature Switching Valve

一种新型制冷装置&低温阀切换式脉冲管制冷机

With numerical calculation from single mode rate equation of semiconductor laser, the output pulse parameters in time and frequency domains are investigated under different gain switching conditions.

从激光器的单模速率方程出发，利用数值方法研究了在不同的增益开关状态下，输出光脉冲的时域及频域特性。