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square wave AC polarography 方波交流极谱仪
The paper deals with the basic principles of the pulsed square wave AC MIG/TIG welding power source. 主要介绍双凹波形脉冲氩弧焊电源的工作原理。
DEVELOPMENT FOR SQUARE WAVE AC PULSE TIG WELDING MACHINE 方波交流脉冲钨极氩弧焊机的研制
Pretreatment of Aluminum Electrode Foil for Low Voltage Capacitors by Square Wave AC 低压铝箔矩形波交流电预处理探析
Excellent staable are from Ac square wave, avoid high frequency hazard. 交流方波自稳弧性能优异,免除高频危害。
square wave AC 交流方波
Introduce the principle of MOSFET AC square wave inverter power source. 介绍了MOSFET交流方波逆变电源的工作原理。
It can obtain dropping characteristic when AC, welding current waveshape is rapid zero-crossing square wave, it is propitious to welding current and arc stability. 交流时可获得陡降外特性，焊接电流波型为迅速过零的方波，有利于焊接电流和电弧稳定。
The experiment expressed that the square wave unit and EFT drive unit designed work very well,and the high frequency AC square wave welding machine has alraedy used to welding thin steel sheed successfully. 实验证明,设计的方波信号发生器与场效应管驱动器工作稳定可靠,所研制的方波交流高频弧焊电源已成功地对薄钢板进行了焊接。
Square waves, like sine waves, are periodic. 方波如正弦波一样是周期性的。
Contrast aging tests are carried out on twisted pairs simulating inter-turn insulation and insulation to ground of inverter-fed traction motor under AC and square wave pulse conditions. 变频牵引调速电机匝间绝缘承受来自逆变器的连续高压脉冲方波的作用,其老化机理与工频正弦电压作用下具有很大差异。
And that it is high veracious by base wave AC parameters measurement method to those not bad contaminative. 而对谐波污染不严重的线性用户采用基波交流参数测量的方法仍然具有较高的准确性。
The concept of square wave and EFT drive unit are introduced in this paper. 本文介绍方波信号发生器及场效应管驱动器的原理与设计。
When the square wave signal pass the LPF,we can get the sine signal. 经过分析可知,检测过程中的低通滤波器对检测的精度和速度有重要影响。
As an example of the technique, let's compute the Fourier series which corresponds to a square wave. 作为这种方法的一个例子，让我们计算一个方波的傅里叶级数。
For sine wave, triangle wave, and square wave, the good performance of current output is proved by experiments. 经过实验验证,对于正弦波、三角波和方波,负载输出电流波形跟踪良好。
The signal thus received will no longer look like a square wave but will be distorted in shape and spread out in time. 这样收到的信号看起来不再象矩形波,而是受到畸变,并且持续时间延长了。
When the actuator is actuated with a square wave, the corresponding mean velocities are 4.70m/s and 4.22m/s. 该致动器存在两个共振频率;在共振频率下工作;方波分别出现了4.;70m/s和4
In the square wave current welding,the inductance is very important to influence the fomation of square wave A. 在方波交流焊中，电抗器的电感量对方波的形成及电弧的稳定性有着很大的影响。
A device that generates high-frequency pulses(usually a square wave) for purposes of synchronization and event timing. 一种发生高频脉冲（通常是方波）的装置，以达到同步和事件定时的目的。