由于直流供电电源纹波的影响，电压控制SPWM逆变电路的输出谐波分量幅值较大。
Because of the ripple of the DC power supply, the output harmonic amplitude of the voltage controlled SPWM inverter is higher.
论文采用直流斩波原理，利用体积小、重量轻、效率高、可靠性好的开关电源作为直流供电电源。
With chopping principle, switching power supply is chosen as the DC power supply because of its small size, low weight and high efficiency.
主要是提供电磁铁的直流电源及完成(吸、放料)控制要求。
The main purpose is to provide DC power supply and complete (suction, discharge) control requirements.
这个船坞能供电的最大功率是多少？有直流电源吗？
What's the maximum power the dock can supply? Is there any source of direct current?
为保证直流操作电源供电的可靠性，必须对蓄电池组运行参数进行全面的监测。
To warrant reliability of DC operation power electrical supply, all-round monitoring to parameter of storage battery operation is necessary.
文章介绍了电路结构和工作原理以及消除引线电阻、电阻应变片的温度漂移和直流稳流电源供电质量对测量准确度的影响等问题。
It introduces circuit structure, operating principle and solves problems of temperature shift and dc constant-current power supply quality effect on measuring accuracy.
介绍了以AT 89 C 51单片机为基础的小灵通基站直流远供电源模块综合参数检测仪的硬件和软件的设计。
Based on AT89C51 micro-controller, this paper describes the design of hardware and software of multi-parameter measurement instrument of DC remote reserve power supply module of PAS cell station.
利用气体放电管的特性，实现了小灵通基站后备直流远供电源悬浮系统动力线碰触的检测；电路结构简单，实用性强。
The detecting circuit of power line touching of the suspension system of DC long-distance reserve power supply of PHS Cell Station was designed by the characteristic of gaseous discharge tube.
在电子电路及设备中，一般都需要稳定的直流电源供电。
Electronic circuits and devices, generally requires a stable DC power supply.
文中介绍了通信基站的电源系统，包括交流供电系统、直流供电系统和接地系统，论述了等电位在基站建设中的重要性。
In the paper, an electrical power system of base station is introduced in detail, including AC power supply system, DC power supply system and earthing system.
该设备采用太阳能电池与蓄电池相结合的自动充电、连续供电的直流电源。
The device is provided with a DC power supply which can automatically charge and continuously supply power and is formed by a solar battery and a storage battery.
电源电路包括：射频信号发生电路、射频功率放大电路、直流供电电路和附加保护电路，以及与激光头的匹配网络。
The power circuit is composed of following circuits: RF oscillator, RF power amplifier, DC supply power circuit, protection circuit and matching network.
最后，由于采用直流电源供电并且电压控制在36伏以下，因此安全性大大提高。
Lastly, safety can be increased largely because of using DC electrical source and control voltage under 36v.
采用模块电源构成飞机高压直流电气系统的二次电源分布式系统，可提高供电可靠性和供电质量。
It can improve the reliability and quality of the high voltage DC electrical system of airplane to adopt modular power supplies to construct a secondary distributed power system.
将原来使用的交流UPS电源供电改为直流电源模块供电；
The AC UPS used before has been replaced by the DC module power supply nowadays.
M 1200采用了明亮，清晰的TFT液晶显示器，由100- 240伏交流整合电源供给，以及可选的24伏直流电源供电。
The M1200 utilizes bright, clear TFT LCDs and is powered by 100-240 AC integrated power supplies with optional 24 Volt DC.
提出了一种以恒定电流驱动白光led的矿用直流开关电源，给矿井下的直流电机车和矿灯供电。
Presents a constant current white LED driver for mining DC switching power supply to the mine under the DC power supply locomotives and miner's lamp.
设计了一种新型的被动式电磁阻尼器，其采用直流稳压电源供电，无需控制。
A new passive electromagnetic damper worked with DC is proposed. Experiments and theory for vibration control of rotor system by passive electromagnetic damper are introduced.
ZD B型直流电源变换器是工作在直流600v供电系统的变流装置。该装置以新颖电力器件IGBT作为开、关器件并采用PWM控制技术。
Working in a 600v DC power supply system, the type ZDB battery charger USES new power electronic insulated-gate bipolar transistors (IGBT) as switching device and adopts PWM control technics.
直流电源与交流供电能自动转换。
就电源而言，灯丝用交、直流供电均可，但是版本二中的3a5除外，它必须用直流供电。
About the power supply, the filaments can be powered by AC or DC except that the 3a5 (version 2 of the amplifier) requires a DC filament supply.
DC/DC电源变换器是能将一种直流电压变换成另外一种或几种直流电压的高效供电装置。
The DC/DC power converter is a high effective source device that can convert the DC voltage from one type to other type or several types.
DC/DC电源变换器是能将一种直流电压变换成另外一种或几种直流电压的高效供电装置。
The DC/DC power converter is a high effective source device that can convert the DC voltage from one type to other type or several types.
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