An AC powered source usually has a significant level (often several volts) of line frequency common mode voltage.
交流供电的源通常具有很高电平的电源频率共模电压(常常有几伏)。
NOTE: If the system is connected to AC power and an error has been detected, the LCD lights amber regardless of whether the system has been powered on.
注意：如果系统已连接到交流电源，并已检测到一个错误，液晶灯琥珀不论系统已接通电源。
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.
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。
USB bus powered, no need for an AC adapter.
USB自身供电，不需要一个适配器。
The M1200 utilizes bright, clear TFT LCDs and is powered by 100-240 AC integrated power supplies with optional 24 Volt DC.
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。
At the heart of the tractor is the electric motor, which drives the hydraulic pump that supplies power to the wheels. Both ac and DC powered motors are used in e-line tractors.
爬行器的核心是电机，其驱动液压泵为轮组提供动力，电缆爬行器可以使用AC或DC电机。
It overcomes the major limitation that system designers often encounter whereby they must locate powered network devices within close proximity to AC power outlets.
它克服了系统设计人员经常遇到的障碍——必须把用电的网络设备和交流插座尽量放在一起。
Because of the stability of LED current, these designs provide an expanded input-ac-voltage range, which may be useful for a multistandard ac-powered gadget;
由于LED电流的稳定性，这些设计使输入交流电压的范围扩大，其有利于多标准交流供电设计；
Because of the stability of LED current, these designs provide an expanded input-ac-voltage range, which may be useful for a multistandard ac-powered gadget;
由于LED电流的稳定性，这些设计使输入交流电压的范围扩大，其有利于多标准交流供电设计；
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