During choose the direct current power supply, pay attention to the negative and positive.
选用直流供电时，注意正负极标识。
The direct current power supply system controlled by power-electronics converters will be used widely.
变换器控制的直流供电系统的应用将越来越广。
At present, iontophoresis apparatus is a method that direct current power supply, or pulse electric current power supply.
目前，电离子导入仪主要采用的是直流电激励导入，或是脉冲电导入的方法。
Nickel is electrochemical micromachininged using nanosecond pulse power, millisecond pulse power and direct current power.
利用纳秒级脉冲电源、毫微秒级脉冲电源和直流电源，进行了电解加工试验。
C voltage divider includes switching power and electricity - transformation, so that it can be used to design lower voltage of direct current power.
直流分压器集开关电源和电能变换于一体，可以用来设计降压型直流电源。
Further, direct current power supply is utilized to recharge the batteries in parallel connection, thereby increasing the efficiency of balancing voltage.
本发明还利用直流电源对并联电池进行充电，进一步提高了电压平衡的效率。
The DC/AC conversion section converts a direct current inputted from a direct current power source into an alternating current, and outputs the alternating current.
该DC /AC转换部分直接转换为电流输入由直流电源成交流电，并输出交流电。
The invention is used for measuring the distribution of the space charges in the high-voltage direct current power equipment insulation in the temperature gradient field.
本发明用以测量温度梯度场下高压直流电力设备绝缘中的空间电荷的分布。
The intelligent metering device for direct current power consumption is a practical metering and managing device for direct current power consumption in electrolytic aluminium plant.
该智能装置是国内电解铝厂电解车间一种实用的直流电耗计量管理装置。
The utility model relates to a lightning arrester installation in network equipment of direct current power supplying system, particularly relates to an angle type lightning arrester.
本实用新型涉及在直流供电系统网络设备中避雷器的安装，特别 涉及一种角型避雷器。
A kind of xenon lamps stabilizer is designed which is made up of the tripper-circuit with two-leveled rising voltage and the direct current power circuit with frequency conversion mode.
设计了一种由两级升压触发电路及变频式直流电源电路构成的氙灯安定器。
The system generates a direct current, so using it to power DC devices locally is more efficient than switching to the alternating current needed to feed it back to the grid.
该系统产生的电流为直流电，所以用来驱动本地的直流点装置比将其转化为交流电输入电网来的更有效率。
To transmit the power for the solar farm we would need to build new high-voltage direct current transmission to replace our ac current grid.
为了传输太阳能发电站的能量，我们将需要建造新的高伏特直流传输器来取代我们的交流电网。
A large disc-shaped rectifying antenna attached to the fuselage harvested the microwave energy, turning it into direct current to power an electric motor attached to the plane's propeller.
机身上的圆盘形整流天线能接收地面传输的微波能，将其转化为直流电为飞机推进器上的电动机供能。
What's the maximum power the dock can supply? Is there any source of direct current?
这个船坞能供电的最大功率是多少？有直流电源吗？
Incoherent detectors are those in which a current or voltage is generated in direct proportion to the amount of received power.
非相干的探测器产生正比于被接收功率的电流或电压。
It was associated with the interest characteristic of power closely, but Its direct cause is the short and error in our current system of personnel matters.
它同权力的利益属性有密切联系，而我国现行干部人事制度的不足与执行中的偏差则是其直接原因。
This article introduces a method of direct usage of voltage source as a power for Hall element instead of constant current system.
本文介绍一种不用恒流源而直接用电压源为霍尔元件供电的方法。
Synchronous motor excitated magnet by direct current can make output mechanism specialities matched load specialities by means of adjusting exciting current to change magnetic field and power factor.
这是因为电励磁的同步电动机可通过调节励磁电流来改变其磁场和功率因数，使输出的机械特性与负载特性相匹配。
Power supply or circuit capable of regulating either alternating or direct current within 5% of desired value, and limiting the open circuit (source) voltage to 20 millivolts maximum.
电源及能调节交流或直流电流在期望值的5%之内的，控制开路电压到最大20毫伏的路。
Current sensor is an important element for on line PD monitor of electric power equipment and its transfer characteristic has a direct influence on PD measurement.
电流传感器是电力设备局部放电在线监测系统中的一个重要组成部分，其局部放电信号传输特性直接影响测量结果。
Major innovation is the power conversion with chopper and controlled converter DC-link in direct current networks.
新加入的是直流路网中用斩波器和中间电路电压可调的功率变换装置。
Within our countrys power system, synchronous generator excitation system primarily consists in direct current exciter system and semiconductor exciter system.
在我国电力系统中，同步发电机的励磁系统主要有直流励磁机励磁系统和半导体励磁系统两种。
The operation and performances of a new type direct current high voltage power supply are described.
本文阐述了一种用于核探测器的新型直流高压电源的原理及性能特点。
This article introduces the fundamental of direct current regulator, and designed a low - voltage power which can inspire the laser instrument.
介绍了直流稳压电路的基本原理，并设计了能激发激光器的低压电源。
The functions of direct current supply of accumulator were introduced. The operation results showed that the power supply had a good operation effect, and a low cost.
介绍了蓄电池直流电源的作用及功能，运行结果表明，该电源运行效果良好且成本低。
The temperature control system based on DS18B20 adopts C8051F020 and its external interface circuit to carry out the measurement control for direct current manostat power temperature.
基于DS18B20的温度控制系统，利用C8051F 020及其外围接口电路对直流稳压电源温度进行测量控制。
The hysteresis wide is widened for decreasing switching frequency and energy losses, which causes the pulsation of instantaneous active power and direct current voltage.
为降低开关频率和减少开关损失，需增加功率滞环比较器环宽，否则引起瞬时有功功率和直流电压波动，影响系统的性能；
The hysteresis wide is widened for decreasing switching frequency and energy losses, which causes the pulsation of instantaneous active power and direct current voltage.
为降低开关频率和减少开关损失，需增加功率滞环比较器环宽，否则引起瞬时有功功率和直流电压波动，影响系统的性能；
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