The harmonic problems, such as distorting supply voltage, decreasing power factor, increasing energy loss, interfering with communication systems etc. are discussed in the part one.
第一部分讨论各种谐波问题，如使供电电压畸变，降低功率因数，增加能量损耗，干扰通讯系统等。
The paper introduces the technique feature and the operation principle of chip CS5460A, and its application in high-accuracy power frequency voltage, current, power, power factor, frequency meter.
本文介绍了CS5460 A芯片的特点、工作原理及其在高精度工频电压、电流、功率、功率因数、频率表中的应用。
Voltage is the essential factor that the color of film varies orderly with the change of voltage.
电压是影响膜层色彩的最主要的因素，颜色随着电压的变化而发生规律性的改变。
The basic purpose of a shunt capacitor bank is to increase the local circuit voltage and or reprove the load power factor carried by the circuit.
并联电容器组的基本目的是要提高当地线路的电压，或提高引线路所带负荷的功率因数。
Grid voltage in accordance with corporate standards and requirements for power factor to determine the motor's voltage rating and type.
根据企业的电网电压标准和对功率因数的要求，确定电动机的电压等级和类型。
Cooling the sample from room temperature (290k) to liquid nitrogen temperature (77k) decreases the voltage noise by approximately a factor of two.
将样品从室温温度(290k)降低到液氮的温度(77k)，可以使得噪声电压减小大约一半。
Two circuits, characterized by high Power Factor and low output voltage, are proposed.
这两种电路都具有功率因数高、输出电压较低等特点。
The effect on the generator excitation magnetic field is different when the capacity and power factor of load are different, and the effect on the internal impedance voltage drop is different, too.
而不同容量的负载，以及负载的不同功率因数，对同步发电机励磁磁场的作用是不同的，对同步发电机的内部阻抗压降的作用也是不一样的。
The DC bus voltage and the power factor of the PWM rectifier are regulated by three nonlinear PI controllers with high performance.
采用双环结构，用三个非线性PI环节实现了对整流器直流电压与功率因数的高性能控制。
The open loop time constant of the main generator influence the overshooting evidently. The important factor is the rising speed of the output DC voltage.
主发电机的开环时间常数会对建压过冲产生影响，而输出直流电压的上升速度也是一个重要因素。
The sensitivity method and the singular participation factor method in evaluating weak buses ranking of static voltage stability were compared with each other.
针对电力系统静态电压稳定性的弱节点排序问题，对灵敏度法和奇异参与因子法进行了比较。
For measuring the electric performance parameters of light sources, measuring the voltage, current, power and power factor.
用于测量光源的电性能参数，测量电压、电流、功率、功率因数。
The relationship between the unity power factor and the voltage balance of the capacitor was discussed.
主要讨论了单位功率因数实现和电容电压平衡问题及其关系。
In order to satisfy the real - time measurement, we studied the fast arithmetic of virtual value of voltage and current, power factor.
为了满足实时检测要求，研究了计算电压、电流有效值和功率因数的快速演算法。
Due to its relative low amplitude properties, the bioelectricity signal is easy influenced by surrounding factor, the amplifier with low noise and voltage offset is required.
由于生物电信号非常微弱，容易受量测环境及电路本身等因素所影响，故要求该放大器具有低噪声和低失调电压的性能。
Using fluorescent and incandescent as light source, basic features of solar cells such as short circuit current, open voltage, maximum output filling factor and so on were measured.
分别采用白炽灯和日光灯作为光源，测量了太阳能电池的伏安特性、开路电压、短路电流、最大输出功率、填充因子、光照特性等基本特性。
The driving voltage is the major factor for shortening the closing time.
发现影响电磁阀关闭速度的主要因素是驱动电压的大小；
In an electric power system, the following parameters often need measuring: voltage, current, power factor, power, reactive power and apparent power.
电力系统中常需测量电压、电流、功率因数、有功功率、无功功率和视在功率等参数。
The studies indicate that materials properties and discharging times have effects on sizing precision, but the discharging voltage is the primary factor for the sizing precision.
研究表明，虽然材料性能和放电次数对校形精度有一定的影响，但放电电压是校形精度的决定因素。
Static var generators are used to improve voltage regulation, stability, and power factor in ac transmission and distribution systems.
静止无功发生器可提高交流输电系统和配电系统的电压调节能力、系统稳定性和功率因数。
Experiment results showed that the correction device of power factor could realize high power factor, low harmonic distortion and low ripple of output voltage.
通过实验结果表明，单级功率因数校正装置可以实现较高的功率因数、较低的总谐波畸变，而且输出电压纹波小。
Measures to increase the open circuit voltage, the fill factor and short circuit current density are discussed both theoretically and technologically for an efficient silicon solar cell.
本文从理论上和工艺上论述了高效率硅太阳电池的研制情况，分析了如何提高硅太阳电池的开路电压、填充因子及短路电流密度的措施。
The author has developed a dissipation factor measuring system using the variable frequency series resonant voltage.
本文研制了一套在调频串联谐振电压下进行介质损耗因数测量的系统。
However if the active clamp flyback converter is designed to operate in CCM, and the duty cycle is controlled to make the input current track input voltage, the input power factor can be improved.
但如果设计反激有源箝位电路工作在电流连续模式，控制占空比，使输入电流跟随输入电压，可以提高输入功率因数。
Simulation and experimental results show that the proposed converter has sine wave input current and output voltage, low harmonic content, adjustable power factor, and zero voltage commutation.
仿真和实验结果表明：所提出的变换器输入电流和输出电压为正弦，谐波小且输入功率因数可控，并可实现零电压换流。
A discussion has also been made on the relationship between power factor and voltage loss, which can be use for reference.
同时也对功率因素与电压损耗之间的关系进行了探讨，可供借鉴参考。
It adjusts some technical parameters, such as the output DC voltage adjustable range, efficiency and power factor, wide band noise voltage, static regulation value.
调整了直流输出电压可调节范围、效率与功率因数、宽频杂音电压、稳压精度等指标。
Since power is proportional to the square of the voltage, if the input signal is increased by a factor of two, the output signal is increased by a factor of four.
由于功率与电压平方成正比， 因此如果输入型号增大至两倍，输出信号将增大至四倍。
Since power is proportional to the square of the voltage, if the input signal is increased by a factor of two, the output signal is increased by a factor of four.
由于功率与电压平方成正比， 因此如果输入型号增大至两倍，输出信号将增大至四倍。
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