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  1. Application of the lift signal system of ZDB type PlC in dark inclined shaft in Luxi Coal Mine

    ZDB型PLC暗斜井提升信号系统在鲁西矿的应用

  2. Working in a 600V DC power supply system , the type ZDB battery charger uses new power electronic insulated-gate bipolar transistors ( IGBT ) as switching device and adopts PWM control technics .

    ZDB型直流电源变换器是工作在直流600V供电系统的变流装置。该装置以新颖电力器件IGBT作为开、关器件并采用PWM控制技术。