In the application of above 24V fort current voltage grade control circuit, Voltage Alternating and resonant wave interference of input model for Programmable Logic Controllers must be resolved.
可编程控制器在高于24V的直流电压等级控制回路中应用时需解决输入模块的电压变换和谐波干扰等问题。
The product of the effective values of the voltage and current with the cosine of the phase Angle between current and voltage in an alternating-current circuit.
伏特量交流电路中电压与电流的有效值以及电流与电压之间相位角的余弦之乘积。
Transient and surge are the instant aberrance of the voltage and electric current on the simple alternating current wave circuit. surge and harmonic wave are the main manifestation.
瞬变和浪涌是正弦交流波电路上电压与电流的一种瞬时态的畸变。浪涌、谐波为主要的表现形式。
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。
High power factor stabilized voltage supply is a kind of high performance alternating current power supply which can not only steady the output voltage but also enhance the input power factor.
高功率因数稳压电源是一种既能起到稳压作用又可以提高电源输入端功率因数的高性能交流电源。
As early as the end of 19th century, people had discovered the distortion problem of voltage and current existing in the distribution system when the alternating current arisen as a newly motive form.
早在19世纪末，当交流电以一种新兴的动力形式出现时，人们就发现了系统中电压、电流存在畸变的问题。
Because inorganic thin film EL has no blue color component and must work in alternating current with high voltage up to 100V, fabrication of color super-thin displays will be difficult;
由于无机薄膜EL缺乏高亮度蓝基色成分以及驱动电压是1 0 0V左右的交流，难于制成低压彩色超薄显示器；
Because inorganic thin film EL has no blue color component and must work in alternating current with high voltage up to 100V, fabrication of color super-thin displays will be difficult;
由于无机薄膜EL缺乏高亮度蓝基色成分以及驱动电压是1 0 0V左右的交流，难于制成低压彩色超薄显示器；
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