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。
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。
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？
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。
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。
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。
Thermoelectric generator (TEG) which is driven by natural gas can supply direct current to CP system of gas transmission pipeline in remote and no power supply district.
TEG即热电发生器，以天然气为燃料，可满足边远无电地区输气管道阴极保护直流用电需要。
Reformed the two aspects of the power supply, a great improvement of the reliability of the mine-used direct-current stabilivolt power supply is made.
并从这两方面对电源进行了改造，使矿用直流稳压电源可靠性有了很大提高。
Given the need of the transmitter circuit of the ground penetrating radar for a power supply with direct current and high voltage, this paper presents an improved voltage stabilizing circuit.
针对探地雷达发射电路对于直流高压电源的需要，提出改进型稳压电路。
The function of the power supply is converting the alternating current provided by the power plant into direct current required by normal computer system.
电源供应器主要是用来将发电厂提供的交流电转变为一般电脑系统所需求的直流电。
It will produce magnetic field due to affection by direct current welding power supply during the welding of spiral submerged arc welded pipe. It will still remain residual magnetic.
螺旋埋弧焊钢管焊接过程中因直流焊接电源的影响会产生磁场，焊接结束后仍有剩磁存在。
The power supply module is connected in the device to provide the device with direct current. The whole device is fixed in a casing and is installed on a police motorcycle.
电源模块连接在装置中为其提供直流电，整个装置固定在机壳内并安装在警用摩托车上。
This experiment has designed take monolithic integrated circuit 89C51 as the basic control core simple numerical control direct-current power supply.
本实验设计了一个以单片机89C51为基本控制核心的简易电流电压信号发生器。
This experiment has designed take monolithic integrated circuit 89C51 as the basic control core simple numerical control direct-current power supply.
本实验设计了一个以单片机89C51为基本控制核心的简易电流电压信号发生器。
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