电流

The effects of temperature on the Early voltage and the current gain of the 4H-SiC BJT are investigated.

通过考虑缓变基区4H-SiC BJT电流增益及器件内4种载流子复合过程，计算了4H-SiC BJT的厄利电压，分析了Early电压及电流增益的温度特性。

The offset current is low, so the current flowing through RA and RB is the same. Assuming the gain is very high, the voltage gain of the circuit is defined as

由于偏置电流很低，所以流过RA 和RB 的电流相同，假定增益A非常高，则电路的电压增益为

This converter array can reach high current and high voltage rating simultaneously, it suits the application of high power SMES.

电流型变流器阵列可同时得到大电流和高电压，适合应用于大容量超导储能系统。

The wattmeter connects with measured circuit direct when the power is low,then connects with measured circuit though mutual inductor when the rating of wattmeter of the voltage or current is overrun.

当被测电路的功率比较小时，采用直接和功率表相接方法；当被测电路的电压和电流超过仪表电压和电流的最大额定值时，就要用互感器和仪表相接。

Its software uses system self-detecting algorithm to assure measurement channel .It uses softening hardware technique software synchronic data sampling to trace the frequency of exterior signal, in other words , it gives sampling control signals 128 times of power net's frequency .It uses Direct Digital Frequency Synthetics algorithm to transform radical sine waveform parameter table into needed current. It uses FFT algorithm to get radical waveform altitude of current ,voltage and resistor .

整个系统在软件设计上采用系统自检验算法保证测量通道可用，采用硬件软化技术--软件锁相环技术，达到对外部信号频率的跟踪，给出频率为电网工频128倍的采样控制信号：直接数字频率合成技术将基波参数表转换成需要的电流信号，采用FFT变换及基波幅度的计算方法得到被测电流、电压基波幅度和电阻大小。

Measuring the reverse bias current of an APD requires an instrument that can measure current over a wide range as well as output a voltage sweep.

测量APD的反向偏置电流需要一种能够在很宽范围内测量电流并且能输出扫描电压的仪器。

This current control VWF which control the wind machine to create the wind.

用此电流输入变频器，变频器控制风机的转速与这个具体的电流对应，从而达到控制风机的目的。

Compared with the two latter anodes, the iron wire gauze anode presented the highest current efficiency at relatively small current density.

结果发现，铁丝网电极在不同电流密度、电解时间和温度的影响下，生成高铁酸钠的电流效率、浓度及Fe／Fetol。

In order to let the active power filter could be used in 3-phase 4 wires circuits, a new method of harmonics detection is given in this paper, which is based on p-q method and ip-iq method of the instantaneous reactive power theory. This method remove the zero current.

综合运用瞬时无功理论中的p-q法和法，提出了一种新的基于瞬时无功理论的有效的三相四线制谐波检测新方法，此方法能将三相电流中的零序电流剔除。

Pilot zero sequence directional protection may fail to operate because the zero sequence current on one end does not reach the set value of the protective relay,although zero sequence directional elements on both ends operate correctly.

线路发生接地故障时，两侧零序阻抗相差过大将导致两侧零序电流差别过大，虽然两侧的零序方向元件均能正确动作，但是由于一侧零序电流达不到动作定值，从而造成纵联零序方向保护拒动。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。