查询词典 current amplifier

A flat high efficiency super-broadband source was presented. We achieved a C+L-band superfluorescent source, in the region from 1524. 0 to 1600.4nm, the power of the ASE are over -12. 0dBm and the ASE profile excursion is only ±1. 4dB in the region from 1539. 2 to 1600.4nm. The power of the ASE is 22. 1mW and the power conversion efficiency is 18. 8%. 9. The amplification characteristics of thulium-doped fiber amplifier had been studied using the basic theory for fiber amplifier. The connection between the Tm-doped fluoride fiber and silicon fiber was accomplished, and we studied the TDFA and the reason that the expecting results hadn't achieved had been analyzed. The assumption of the Er-Tm-co-doped silicon fiber had been presented, and we studied the Er-Tm-co-doped silicon in cooperation with the correlative corporation, some results had been got and the further studies are carried on.

实验结果得到了覆盖C+L-波段的超荧光光源，在1524.0-1600.4nm波长范围内，自发辐射谱的功率均高于-12.0dBm；在1539.2-1600.4nm波长范围内，自发辐射谱不平坦度为±1.4dB；荧光总功率为22.1mW，功率转换效率为18.8%； 9、应用光纤放大器的基本理论，理论分析和研究了掺铥光纤放大器的放大特性；解决了氟化物掺铥光纤与硅基光纤的连接问题，进行了TDFA的实验研究，分析了没有得到预期结果的原因；最后提出了铒-铥共掺硅基光纤的构想，并与有关单位合作，共同研制了铒-铥共掺硅基光纤，得到了一些前期结果，进一步的研究仍在进行当中。

The system consists of phantom, signal source block, power amplifier block, measuring mode setting block, high accuracy amplifier and high speed demodulator.

该系统包括信号源模块，功率放大模块，测量模式设置模块，信号放大模块，同步解调模块。

Subsequently, owing to the self-adaptability of the amplifier gain, the amplifier adjusts the self-gain according to the input RF signal amplitude, leads the output voltage to be stable, and ensures the normal operation of the sub-step circuit.

而后由于放大器增益的自适应性，放大器根据输入的RF信号幅度调节自身增益使得输出电压稳定，保证了后级电路的正常工作。

Advantages of power operational amplifier in underwater sound transmitter and problems of power opertional amplifier with reliability and stability in application are described.

描述了功率运放在水声发射机方面的特点，探讨了功率运放在应用中可靠性和稳定性等方面的问题，给出了发射机应用实例。

Therefore, a programmable control amplifier is designed by using digital potentiometers and a low-power operating amplifier.

为此，采用数字电位器和低功耗运算放大器研制了一种程控放大器。

The most common ratio using current asset and current-liability data is the current ratio, which is current assets divided by current liabilities.

利用流动资产和流动负债数据计算的最常见的比率是流动比率，即流动资产除以流动负债。

Backset current area, the important factor of burner performance was discussed on the basis of carrying on numerical simulation to the cement kiln with three-channel burner by the model of. RNG k-ε. The model that backset current area was divided into center backset current area, interior backset current area, and other backset current area was compared in three-dimensional condition.

在采用重整化群κ-ε模型对水泥窑用多通道燃烧器进行数值模拟的基础上，针对影响燃烧器性能的重要指标－回流区进行讨论，将三维条件下燃烧器的流场分布与传统燃烧器流场进行劝比，提出了三维条件下燃烧器回流区分为中心回流区、内回流区、外回流区3个回流区的分布模型，并分析了影响回流区的直流风和旋流风2个重要因素。

The instantaneous current capacity may demonstrate through the nixietube, provides the craft data reference for the operator.8031If the system the setting value carries on again the current capacity actual value the comparison, calculates the control quantity after the PID adjustment operation vi, again transforms into the electric current output signal, after but controls the silicon-controlled rectifier after the enlargement the breakover angle, the realization adjusts the slippery difference electrical machinery magnetic clutch exciting current the function, thus the adjustment implementing agency slippery difference electrical machinery rotational speed, causes to transport on the leather belt the material current capacity to stabilize as far as possible nearby the setting value, and has the good static target and the dynamic performance.

瞬间流量可通过数码管显示出来，为操作人员提供工艺数据参考。8031系统再将流量实际值与其设定值进行比较，经PID调节运算后计算出控制量vi，再转换为电流输出信号，而后经放大去控制可控硅的导通角，实现调节滑差电机电磁离合器励磁电流的功能，从而调节执行机构滑差电机的转速，使输送皮带上的物料流量尽可能稳定在设定值附近，并具有良好的静态指标和动态性能。问题补充：希望大家不要给机器翻译的答案，我想要人工翻译的，谢谢大家了

Secondly, the discharge characteristics were investigated. As the RF power was switched on and the matching impedance suitably set, a pale-purple glow was initially generated near the wall. With increasing RF power, the pale glow evolved into bright white glow. Analysis of voltage and current wave forms suggested that both the voltage and current wave forms are predominately sinusoidal and discharge cycle was above 100 nanoseconds. Current-voltage curve showed that discharge current increase as voltage increase without any abrupt; The current-voltage phase angle suggested that the plasma evolved from being predominately capacitive to predominately resistive. Discharge mode was essential an abnormal glow discharge plasma.

其次对装置的放电特性进行了分析，从放电的现象看，随着放电功率的提高，放电颜色由开始的暗紫色过渡到亮白色；从电流-电压波形曲线图发现所有的放电电流和电压曲线都是正弦曲线，放电的周期达到上百个纳秒；从电流—电压曲线分析，电流随着电压的增长而增长，并没有发现任何的突变现象；从电压—电流相位角来看，随着电流的增大，相位角基本保持不变，整个电路表现出容性放电性质，但是电阻性成分已经很强，属于反常辉光放电区域。

It consists of circuitry that this constant current circuit stabilizes the criteria of a highly precise returned type constant current circuit of operation in another constant current circuit,Furthermore, the voltage amplification with very high stability is realized by adopting this constant current circuit also as the bias circuit of a first rank cascode and the 2nd step cascode, and the 2nd step constant current load intensity.

它由电路，这恒流电路稳定的标准，一个高度精确的返回式恒流电路的运行在另一恒流电路，此外，电压放大具有极高的稳定性，实现了通过这项恒流电路也作为偏见电路的第一级和第二栅栅一步，和第二步骤恒定电流负荷强度。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"