主要的电力供给是来自市电电源并通过一个集合线圈激发；电流范围从5到125安培。
The primary power supply is powered from the mains supply and energizes a lumped coil; the current ranges anywhere from 5 to125 amps.
可选带电池，用市电输入电源，适合各国电网及电压不稳地区。
It can select battery, electric supply input power, it is suitable for most countries electric net and pressure.
本实用新型提出一种不用市电而用太阳能和风能的风光互补阳台发电电源。
The utility model provides a wind-solar hybrid balcony generating power supply which does not use the mains supply but solar energy and wind energy.
目前，我们现有的市电系统存在不稳定因素，为保证计算机和网络系统的供电正常，应使用UPS不间断供电电源。
At present, Urban electricity system exists unstable factor, for guaranteed the normal supply of power for computer and network system, UPS should be used to supply uninterrupted electric power.
市电市电是商业电源，从大型中央电站向各设施供电。
Utility The utility is a commercial power source that supplies electrical power to specific facilities from a large central power plant.
当市电断路时，工作于电压控制模式，提供稳定的交流电源输出。
While the unity power is failed, the power conditioner works in voltage-controlled mode so as to output AC voltage.
用12V干电池取代外置电源变压器供电从而不受市电供电的影响。
The 12v dry cell is used to replace an external power transformer for power supply, which can not be affected by commercial power supply.
本文以at89c55 WD单片机为控制核心，采用线路复用技术，本着基站以市电供电为主，后备电源供电为辅的运行原则进行远程供电。
The microcontroller of AT89C55WD is the center of system. The paper adopts multiplexing technique and the commercial power plays the role of major supply, with the standby power only as a assistant.
而在市电中断供电时，高性能应急电源能在各种场合为设备提供电能。
The Emergency Power Supply can offer the electric energy for equipment in various kinds of occasions while the power interruption.
市电频率Hum，主要原因包括灯丝线路走线导致的不平衡；供给灯丝的电源变压器（缺陷）导致电源杂波耦合进入信号通道，等等。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
智能交流电源检测仪是对市电、柴油发电机组、交流稳压电源、逆变器及大功率ups的带载能力和技术参数进行检测的仪器。
Intelligent AC tester is the instrument that can test load capability and technology parameter of AC, diesel generator set, AC stable supply, inverter and high-power UPS.
系统有状态记忆功能，当市电掉电及备用电源耗尽后又重新来电，系统仍保持掉电前设置的状态。
System status and memory function, when the city electricity and standby power-down and then re-depletion calls, the system remained down in front of the state.
系统有状态记忆功能，当市电掉电及备用电源耗尽后又重新来电，系统仍保持掉电前设置的状态。
System status and memory function, when the city electricity and standby power-down and then re-depletion calls, the system remained down in front of the state.
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