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高电压

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In order to drive a high impedance load such as HPM sources, it is necessary to commutate FCG's long pulse width, high-current and low voltage pulse to a short pulse with high voltage.

为用FCG驱动象HPM源这样较高阻抗的负载,必须使用脉冲功率调制电路把FCG产生的低电压、大电流、上升时间长的电压脉冲转化为高电压、上升时间短的脉冲。

We used coupling phototube convert the voltage of reflector voltages of klystron linearly to lower voltage, and convert the lower voltages of standing wave measuring line and crystal detector inputting power linearly to higher voltages by operation amplifier. Then we inputted these voltages to computer by analog-to-digital card and plotted the graphs of working characteristics of reflecting klystron with software .

利用光电耦合器将速调管反射极高电压线性转换为低电压,同时将驻波测量线测得电场强度的电压值和晶体检波器所测得的反射式速调管输出功率的电压值通过运算放大器线性放大,然后经过模数转换卡采集到微机中,利用软件绘制出速调管的工作特性曲线。

The authors used coupling phototube convert the voltage of reflector voltages of klystron linearly to lower voltage and converted the lower voltages of standing wave measuring line and crystal detector inputting power linearly to higher voltages by operation amplifier. Then inputted these voltages to computer by analog-to-digital card and plotted the graphs of working characteristics of reflecting klystron with software.

利用光电耦合器将速调管反射极高电压线性转换为低电压,同时将驻波测量线测得电场强度的电压值和晶体检波器所测得的反射式速调管输出功率的电压值通过运算放大器线性放大,然后经过模数转换卡采集到微机中,利用软件绘制出速调管的工作特性曲线。

So the flip-flop output level changes from low to high voltage or high to low voltage on command.

因此触发器输出电平的变化,从低到高电压或前高后低电压对指挥。

Rapid transient electromagnetic pulse generated by impulse voltage discharge may cause serious interference to high voltage measurement, cause disoperation or damage to experimental equipment, and also may cause potential harm to person on-site. Similar question exist in many high voltage laboratories, and it is an important research subject of high voltage measurement. Electromagnetic interference generated by impulse voltage discharge is the most serious interference in high voltage test hall.

冲击电压放电产生的快速暂态电磁脉冲可能对高压测量造成很大的干扰,引起设备的误动或损坏,也可能对人身造成潜在的危害,类似的问题在许多高电压实验室均存在,是高电压测试技术中的一个重要研究课题,冲击电压放电产生的电磁干扰是高电压试验大厅设备中最严重的,随着电子测量控制设备和高参数试验设备的日益增多,这个问题在高电压实验室已经十分突出。

Furthermore, Austin climbs into his specially designed Megavolt suit and ups the voltage to over a million volts-the electricity surrounds his body and lightning bolts shoot 20 feet from his hands!

奥斯丁再接再厉穿上特制的百万伏特高电压装,并将电压调高到百万伏特以上—不仅电流绕着他全身流窜,从他手中还迸射出二十尺长的闪电来!

For these reasons, the breaker-and-a-half switchyard scheme is generally preferred for transmission switchyards and a line tap (particularly for high-voltage and extra-high-voltage lines) would not be considered acceptable.

基于这些原因,断路器和一个半开关计划是普遍的首选传输switchyards和线塔(特别是高电压和特高电压线)将不会被视为是可以接受的。

Whole-cellpatch-clamp technology demonstrated that VDPG (1g/L) had notsignificant effects on the delayed-rectified K~+ current, TTX-sensitive Na~+ current and high-voltage-activated Ca~(2+) current of rat dorsalroot ganglion cells. The fast transiet K~+ current of cottonbollworm dorsal DUM cells, the fast transiet K~+ current, Na~+ current andhigh-voltage-activated Ca~(2+) current of Periplaneta Americana dorsalunpaired median cells were also not significantly affected byVDPG at the same concentration. However, VDPG had significant effecton the fast transiet K~+ current of Pieris rapae. The VES had not significanteffects on the high-voltage-activated and low-voltage-activated Ca~(2+)current of rat DRG cells.

膜片钳电生理实验显示1g/L毒囊粗毒对蜚蠊DUM神经元的快瞬时钾电流、钠电流、高电压激活的钙电流,对棉铃虫快瞬时钾电流和大鼠DRG细胞延迟整流钾电流、TTX-S型钠电流、高电压激活的钙电流均无明显作用,却对菜青虫快瞬时钾电流有明显作用;电刺激粗毒对大鼠DRG细胞低电压和高电压激活的钙通道无明显作用。

A composite cascade multilevel converter composed of a main converter and an accessorial one is presented which is well suited for application in high voltage situations with high performance requirements.

针对高电压、高性能功率变换场合的需要,提出了一种主从组合式多电平变换器的拓扑组合结构,具有输出波形质量高、输出电压等级高和功率转换效率高等特点。

To improve the stability of Arcjet discharge plasma in low current and high voltage mode, research on the demand of output characteristics of Arcjet Power Conditioning Unit was conducted. In this paper, based on PWM invertors and current mode control, using MOSFET as the main power device, an Arcjet Power Conditioning Unit was developed. Through adding a closed loop feedback circuit of output voltage, it can make the output characteristics of PCU be positive resistance to ensure the stability of Arcjet discharge plasma. The experiment indicates that this PCU can make Arcjet engine work at high voltage mode (100 V, 10 A) and ensure the stability of arcjet discharge plasma. Finally, it provides the experimental data of Arcjet when working.

为了解决小电流、高电压下电弧火箭等离子体的稳定性问题,研究了电弧火箭发动机对电源调理单元的输出特性要求,基于逆变电源脉宽调制技术与峰值电流型控制原理,以MOSFET为主功率器件,研制了一台电弧火箭电源调理单元,给出了Arcjet工作时的实验数据,通过增加PCU输出电压的闭环反馈电路,可以使PCU的输出外特性呈现正阻性,保证电弧的稳定燃烧,实验结果表明,该电源调理单元能使电弧火箭发动机达到高电压工作模式(100V, 10A),保持电弧工作的稳定性。

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