Considering the characteristics of digital-synthesis technology and pulse signal, this paper proposes a method to implement the adjustment of high-speed pulse using differential amplifier.
The high-speed twin arc pulse GMAW welding technology possesses the advantages of high efficiency, high quality and automatization, and is paid much more attention to nowadays.
双电弧共熔池脉冲gmaw焊集高速高效、优质和自动化于一体，近来备受重视，但国内对此研究不多。
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The average flux of the PWM high-speed on-off valve are regulated by the Pulse-Width Modulation theory and it is easy to combine the computer and hydraulic control technology.