The drain-source voltage (Fig. 28) starts oscillating at the end of the flyback phase and reaching the minimum of 100V when the MOSFET turns on.
漏源极电压（图28）在反射过程结束后并减小到100伏特时场效应晶体管导通。
Near the critical point of the RLC-circuit, the residual voltage waveform changes form non-oscillating attenuation mode to distinct across zero oscillating mode when the peak current increases.
在RLC回路临界点附近，随着冲击电流峰值的增大，残压波波尾从非振荡衰减过渡到大幅度的过零振荡；
When the wire feed is pausing in each oscillating cycle, the output voltage of power source is a peak value and the wire is melted under the welding voltage, forming a droplet metal.
在停止送丝阶段，单片机令电源输出电压为峰值，焊丝在此电压下返烧并形成熔滴。
When the wire feed is pausing in each oscillating cycle, the output voltage of power source is a peak value and the wire is melted under the welding voltage, forming a droplet metal.
在停止送丝阶段，单片机令电源输出电压为峰值，焊丝在此电压下返烧并形成熔滴。
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