一、概况TDZ—40W客车荧光灯新型变换器，是上海铁路局上海科研所最新研制的一种客车照明用电源变换器，它是BY—2型变换器更新换代产品，该变换器具有以下特点。1．TDZ—40W客车英光灯新型变换器具有异常状态下的保护动能，当灯管脱下未接上，一头发黑产生整流效应或二头发黑 I. Introduction TDZ-40W passenger car fluorescent lamp new converter is Shanghai Railway Bureau Shanghai Research Institute recently developed a bus lighting power converter, it is BY-2 converter update product, the converter has the following characteristics. 1. TDZ-40W bus Yingguang new converter has the protection of abnormal kinetic energy, when the lamp is not off the take off, one black to produce rectification effect or two black hair