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The structure and the work principle of digital control pulse MIG welding invert power supply are introduced;
介绍了以DSC为控制核心的逆变交流脉冲MIG弧焊电源的构成及工作原理；
The paper introduces the principle of ZK400 Vacuum RT Machines; from control pulse frequency of step-motor to adjust mixes speed of Vacuum RT Machines.
本文介绍了ZK - 400真空注型机的原理及功能，并重点介绍了通过控制步进电机的脉冲频率达到调节真空注型机搅拌速度的目的。
This paper presents the principle and virtues of a current-mode-control pulse width modulation(PWM), and makes a comparison with traditional voltage-mode-control.
本文介绍了开关电源的电流型PWM控制技术的原理及特点，并和传统的电压型控制作了比较。
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