| 1. | Two pulse counting circuit
双脉冲计数电路 |
| 2. | The resultant phase shifts are applied , and then two pulses are transmitted and received
应用合成相移，然后发射并接收两个脉冲。 |
| 3. | Two pulse timer
双脉冲定时器 |
| 4. | For the inverter control circuit , the simulation model of 74hc4046 is established . two pulse signals can be obtained by forming dead time , which are used to drive the switching devices
对于逆变控制电路，本文建立了基于74hc4046的仿真模型，通过死区形成环节得到两路触发信号，去驱动主电路的开关器件。 |
| 5. | As the control core of the wielding power supply , outputs two pulses waveform . which is different from each other of their phase position . after the magnifying of the drive module m57959l , the output waveform can drive the igbt and control the
由tms320f2812dsp输出两路相位分别成180o反相的pwm脉冲波形,经过igbt专用驱动模块m57959l的驱动,来控制igbt的导通、关断。 |
| 6. | It can process dead - zone of two pulse signals accurately , whatever their types are , and has such characteristics as excellent performance , good flexibility and high reliability , and its switching frequency and dead - zone time are programmable
它可以对两路任意形式的脉冲信号进行精确的死区处理，且性能优异、灵活性和可靠性高。同时，它具有开关频率和死区时间可编程等特点，因此，可通用在变频器、 svg等其他电力电子设备。 |
| 7. | The saturation time in our simulation is consistent with the prediction of the theory . furthermore , we also studied the propagation of two pulses with inverse phase . in this case , the wakefield excited by the first pulse will be absorbed by the second pulse which shifts to higher frequency
此外，我们还研究“位相相反”的两个脉冲在稀薄等离子体中的传播，第二个激光脉冲由于吸收了前一脉冲激发的静电场，频率向高频方向漂移，得到频移的大小与符合理论推测。 |
| 8. | The shorter the interval between the two pulses of the current wave , the fewer strikes the varistors can endure . at the same time , the dc ljima changes fast - slowly - fast alone with the experiment continuing . microstructual disorder , such as variations in the height of the electrostatic potential at grain boundaries and electrode protrusions into the zinc oxide varistors , causes substantial temperature rise in a microscopic region around the defect and is the source for failure
雷电的多重闪击对雷电过电压保护器件的影响更加严重，本文首次采用不同间歇时间双脉冲电流冲击对氧化锌电阻进行了多次试验，试验表明：氧化锌电阻在双脉冲电流冲击下更容易出现老化破坏现象，间歇时间越短，电阻能耐受的冲击次数越少；此外，直流u _ ( 1ma )值随冲击次数的增加具有快一慢一快的下降过程。 |
| 9. | The optimum intervals between the two pulses is about 1 . 7 in our simulation which is much longer than the commonly cited value 1 . 5 . 3 . in the sm - lwfa simulation , we turned our attention to the wakefield generation and electron acceleration driven by the " self - modulated instability " and " side stimulated raman scattering "
我们首先提出“三角脉冲激发尾流场加速电子”的方案，利用“三角脉冲”平缓的上升沿激发“受激raman散射”预加热电子，其陡峭的下降沿激发尾流场可以使更多的电子被“捕获” 。 |
| 10. | In the realization of the inverter control circuit , the signal from the pll is input to ir2110 via adjusting phase and forming dead time . sg3525 is selected as the core device of the chopper . meanwhile . two pulse that will input to the chopper can be obtained by simple design . besides . the circuit of which core chip is dsp is described
在逆变控制电路的具体实现中，用锁相环作为频率跟踪的核心器件，经相位调整、死区形成等环节得到两路触发信号，输入到ir2110中即可作为逆变器的驱动信号。 |
