使用光开关，可以把这种功率的上升过程缩短到小于0.1ps，在更短的时间内激光以峰值功率到达等离子体。
Using an optical switch, this ramp up time can be reduced to less than a tenth of a picosecond, delivering peak laser power to the plasma on a faster time scale.
主要内容包括PWM斩波电路结构及功率开关器件的选择，驱动电路，保护电路以及软件编程。
The PWM chopper circuit and the selection of power switching elements, protecting circuits, driving units and software programming are given out.
所有的这些电路都不需要外部的功率开关。
None of the circuits requires the use of external power switches.
在喷泉控制系统中，采用单片机控制原理，以可控硅作为功率开关元件，由于可控硅承受过电压、过电流的能力较差，因而不能长时间运行。
In fountain control system, the controllable silicon is used as power switch unit with the control principle of monolithic processor, which cannot run for a long time.
该变流器采用MCS - 8098单片机作为控制器，GTO作为功率开关器件。
MCS 8098 single chip microcomputer and GTOs are adopted as processor and power switching devices.
尤其适合以igbt作为主功率开关管的高电压、大功率功率变换，具有广泛的应用前景和巨大的经济价值。
So this novel converter has a wide application and huge economy effect in power converting field, especially in the high voltage and high power feild where IGBT is used as the main switch.
该装置的电路由脉冲形成源、压频变换器和光耦与功率开关三部分组成。
The circuit of this device is formed the source, pressed frequently by the pulse changer, photosensitive resister and power switch three parts make up.
其主电路采用全桥式拓扑结构，以IGBT管为功率开关器件，中频变压器使用微晶磁心。
Full bridge topology was used in the main circuit, IGBT was used as power switching device, and micro-crystal core was used in mid-frequency transformer.
该拓扑具有所有功率开关均为软开关，输出二极管电压应力低和输入输出滤波器小的特点。
There are soft switching conditions of all switches, low voltage stresses on the output diodes, and smaller input and output filters in this topology.
本文还提出一种强化励磁的控制方案，以解决低压小功率开关磁阻发电系统在高速状态下功率输出较低的问题；
The electronic controller, which controlled by DSP or by hardware circuit are developed for low-power switched reluctance generation system.
该变频调速系统主电路采用交-直-交形式，以(CPLD)作为调速系统逆变电路功率开关器件(IPM)的逻辑控制器件。
The AC-DCAC voltage source inverter composes the main circuit of this variable frequency system and CPLD is the logic control device of the power device (IPM).
由DSP发出移相控制信号并经芯片IR 2110驱动放大，在移相驱动信号的控制下可以实现全桥变换器主功率开关的ZVS。
The DSP sends out the phase shifting control signal and then that amplified by IR2110 chip. It can realize ZVS of the full bridge converter main power switch by the phase shifting drive control.
软开关技术能够有效改善功率开关管的工作环境，降低开关损耗，提高变换器的效率。
Soft switching technique could improve the circumstance of the power switch, reduce the losses and increase the efficiency of the converter.
变频调速系统主电路采用交-直-交形式，以可编程逻辑器件(CPLD)作为调速系统逆变电路功率开关器件IGBT的逻辑控制器件。
Alternating-direct-alternating circuit is adopted and CPLD is used as logic control device of power IGBT in main circuit of variance-frequency timing system.
在异步电机运行中，经常会出现烧毁功率开关 器件的事故，而此原因多是因为电机启动失控造成的。
The trouble which the power switch is always fired occurs often in the process of motor running. It is because of the lose-control of the start.
该电路拓扑族包括单四象限功率开关式、推挽式、半桥式、全桥式等四种电路。
The circuit topologies family include single four-quadrant power switch mode, push-pull mode, half-bridge mode, and full-bridge mode circuits.
通过改进控制方式，可以使这两个功率开关的导通和关断都工作在软开关条件下，从而可以进一步提高开关频率，达到增加功率密度的目的。
The improved control method can make the two power switches turn on and off all under soft switching conditions and further increase the switch operating frequency and power density.
该电路拓扑族包括单四象限功率开关式、推挽式、半桥式、全桥式等四种电路。
The circuit topologic family includes circuits of single four-quadrant power switch mode, push-pull mode, half-bridge mode. and full-bridge mode.
采用先进的逆变技术和进口MOSFET功率开关器件。
Apply advanced reversing technology and imported MOSFET power switch.
选用IGBT作为功率开关器件，自主设计了一套驱动电路对IGBT进行驱动；
Select IGBT for power switch device, design one urge circuit for IGBT independently;
然而，由于漏感影响，反激变换器功率开关管关断时将引起电压尖峰，必须用钳位电路加以抑制。
However, due to leakage effects flyback converter power switch off when the voltage spike caused by the need to be inhibited by clamping circuit.
随着高压大功率开关器件的出现，基于电力电子技术的动态电能质量调节技术已成为解决上述问题的有效手段。
With the emergence of the high voltage power electronic devices, the technique of dynamic power quality regulation is an effective way to solve the above problems.
利用有源钳位电路实现主变压器铁心对称复位，功率开关在宽输入电压和宽负载电流范围内零电压开关。
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
同时采用软启动电路防止浪涌电流，保护功率开关管。
To protect power switches, soft-starting circuit was designed to overcome the surge current.
该焊机采用“无源引弧器”引弧，引入CMOS、时基、大功率开关等集成电路进行弧焊自动控制。
Welding machine control unit is equiped with no power source arc start unit, CMOS, and high power switch.
在采用降压开关功率开关转换器降低正输入电压的同时，通常还需要一个额外的低功率负输出电压。
When we use low-dropout switching power switching converter to reduce positive input voltage, we usually need an extra low - power negative output voltage.
本文提出了一种驱动步进伺服的方法，众所周知，VMOS 器件是一种优良的功率开关，其优点是开关速度快和损耗低。
This paper introduces a kind of DC-DC PWM switching mode power supply driven by VMOS and applied to Program Exchange.
该仪器由可编程脉冲发生器、高压可调稳压电源、高压功率开关和保护电路组成。
It mainly consists of a programmable pulse generator, adjustable high voltage regulator, high voltage switch and protection circuits.
该仪器由可编程脉冲发生器、高压可调稳压电源、高压功率开关和保护电路组成。
It mainly consists of a programmable pulse generator, adjustable high voltage regulator, high voltage switch and protection circuits.
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