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一、前言高频电源是影响线切割机生产效率的主要因素之一。因此,我们设计制造了一种高频电源,其末级采用了低频大功率硅管做单管输出,工作频率可达40～50千周,脉冲前后沿小于1微秒,电压用到135V或更高。由于低频大功率管3DD11—T容量很大(Icm=30安,Pc=300瓦),所以末级采用了单管输出,从而使得高频电源在调正、工艺安装、线路简化、成本各方面都带来好处。低频大功率管二次击穿现象不如高频大功率管那样突出和严重。所以,工作
First, the foreword High-frequency power supply is one of the main factors affecting the production efficiency of wire cutting machine. Therefore, we design and manufacture a high-frequency power supply, the last stage of the low-frequency high-power silicon tube to do single-tube output, the operating frequency of up to 40 to 50 thousand weeks, before and after the pulse is less than 1 microsecond, the voltage used 135V or higher. Due to the large capacity (Icm = 30A, Pc = 300W) of the low-frequency high-power tube 3DD11-T, the single tube output is used at the final stage, so that the high-frequency power supply is adjusted, the process is installed, the circuit is simplified, All bring benefits. Low-frequency high-power transistor secondary breakdown phenomenon as high-frequency high-power tube as prominent and serious. So, work