介绍了绝缘门极双极性晶体管（IGBT）的基本结构、工作原理、开关特性，以及在焊接逆变器中的应用。
The paper introduces the basic structure, working principle and switching feature of IGBT and its application to the converter used for welding.
同时，采用专用芯片SG3525来产生脉宽调制电路，由IR2110组成的驱动电路来驱动绝缘门极双极晶体管（IGBT）。
Special chips, such as SG3525 and IR2110 are also used to generate PWM and to drive the IGBT.
不要将产品或延伸电线上的门或是窗户关上，因为这有可能伤害电线上的绝缘体。
Do not close doors or windows on the product or extension cords as this may damage the wire insulation.
本文介绍了上海地铁1号线屏蔽门系统接地与绝缘情况，分析了地铁屏蔽门系统接地绝缘的原因。
This article introduces grounding and insulation conditions of screen door system along Line 1 in Shanghai Metro.
门电机担负着电梯门的动力驱动，若电机过热，会加速绝缘材料老化，缩短电机的使用寿命。
The elevator door was driven by door motor. If the motor was over heated, it would speed up the ageing of insulating material and shorten the life of the motor.
对给定的门绝缘体，设备原理上需要维持绝缘体厚度与横向尺寸成比例(参考文献1)。
For a given gate dielectric, device physics require maintaining the dielectric thickness in proportion to lateral dimensions (Reference 1).
对给定的门绝缘体，设备原理上需要维持绝缘体厚度与横向尺寸成比例(参考文献1)。
For a given gate dielectric, device physics require maintaining the dielectric thickness in proportion to lateral dimensions (Reference 1).
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