Step down transformers provide low voltage AC power for lighting, instruments and other circuits that use alternating current at a lower voltage.
降压变压器低压AC电源提供照明，仪器仪表和其他使用交流电在一个较低的电压的电路。
In electronics, a circuit for converting AC voltage to low voltage DC in such a way that the output is regulated to minimize noise and voltage fluctuation.
在电子技术中，把交流电转换成低电压直流电的一种电路。这种电路的输出是经过调整的，使它的噪声及电压波动都很。
The ac adapter (as it's more accurately known) simply converts the ac current from a wall outlet into low-voltage, low-amperage DC current that it provides via a USB port.
AC适配器(这是交流电源更准确的说法)只是把来自墙上插口的交流电转化为低伏特、低安培的直流电源，并通过USB接口充入手机。
It can achieve a fixed output of DC voltage in the universal input range of ac 80 ~ 265 V. It owns the advantages of high efficiency, low total harmonic distortion, PF near to 1.
该方案能在80 ~ 265V宽输入电压范围内得到稳定直流电压输出，具有效率高、总谐波畸变率低、功率因数接近为1等特点。
The DC system is normally supplied from a battery charger system, which is supplied from the low voltage AC system.
直流系统通常由蓄电池充电系统供电，蓄电池充电系统由低压交流系统供电。
It adopts SCR with large power to establish the voltage adjustment circuit, so the AC motor can be started with low voltage.
它采用大功率的SCR组成电压调节电路，这样交流电动机就可以低压起动。
The low voltage DC system is one of the most important equipments in converter station, which is closely associated with the safety and stability of DC transmission system and correlative AC system.
低压直流输电系统是换流站内重要设备之一，直接影响到整个直流输电系统及相关交流系统的安全稳定运行。
In this paper, the tested parameter outcome of large synchronous machine identified by using the MPIS parameter identifier from low voltage ac steady state test is presented.
本文介绍采用静态交流试验，应用MPIS参数识别器识别大型水轮发电机的参数结果。
In breakers for operation in low-voltage ac circuits, advantage is taken of the voltage required to establish a cathode spot.
用于低压交流回路的断路器，由于在过零换向电压不能满足再次阴极放电起弧的需要，因此具有容易灭 弧的优点。
Take particular care not to connect AC supplies to low voltage control inputs such as sensor inputs, logic inputs and outputs.
特别注意不要将交流电联接在低压控制输入端，比如传感器输入端、逻辑输入与输出端口。
The utility model provides an electromagnetic system for low-voltage AC magnetic switch.
一种低压交流磁力开关的电磁系统。
Low voltage AC system operating voltages from 120 to 600 VAC.
低压交流电系统中从120到600VAC的电压称为低压。
The utility model relates to an autorotation silent electricity-saving coil, used on the ac contactor in the low-voltage controlling circuit, realizing the silent electricity-saving running.
本实用新型涉及的是一种自转无声节电线圈，用于低压控制电路中的交流接触器上，并实现无声节电运行。
Largely used in color tv, program-controled exchange machine, computer, telephone. fox and the instrumental circuit for the purpose of DC, impulse and AC at low voltage.
该产品广泛使用于彩电、程控交换视机、计算机、电话机、传真机及仪器、 仪表电 路中作直流脉动、脉冲及低压交流功能之用。
Today, VACON is one of the leaders in Low-voltage AC Drive market in the world and provides AC Drive products and solutions to meet the needs of industry and the public sector worldwide.
作为全球唯一百分百专注于交流变频器产品的供应商，VACON已成为世界低压交流变频传动领域的主要领导者之一，为工业和公共设施领域的用户提供高性能、高可靠性的交流驱动控制产品及解决方案。
Today, VACON is one of the leaders in Low-voltage AC Drive market in the world and provides AC Drive products and solutions to meet the needs of industry and the public sector worldwide.
作为全球唯一百分百专注于交流变频器产品的供应商，VACON已成为世界低压交流变频传动领域的主要领导者之一，为工业和公共设施领域的用户提供高性能、高可靠性的交流驱动控制产品及解决方案。
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