【摘要】 介绍了用于信号点灯电路，以取代原信号变压器和灯丝转换继电器的ＸＤＺ型多功能信号点灯装置的原理、构成、功能特点和技术指标。更多还原

【Abstract】 This paper introduces the principle,configuration,function,features and technical specifications of XDZ Multifunction Signal Lighting Set which is used to take place of signal transformer and filament transfer relay.更多还原