dc110v48v斩波电源.doc

. (二) SS ;型( 1^-158 号)机车 DC110V/48V 斩波电源本斩波电源的结构、电路形式及电路工作原理与 110V/15V,24V 斩波电源相一致,差别仅在于少了一路输出及其周围的相应元器件,电路中部分元器件的参数值有所改变。电源主要技术参数输入直流电压······································· 77-137. 5V 输 出直流电压···························································· …… 48 士钾额 定输出直流电流···························································· …… 3A 最 大输出直流电流···························································· …… 4A 效率········································································ ……, > 60% 保护: 48V 输出欠压保护值················································ …… 42-44 V 48V 输出过压保护值················································ …… 52^-54 V 110V 输入欠压保护值················································ …… 68一 70V 110V 输入过压保护值························ ……”············· …… 140-145 V 辅 助电源欠压保护值······················································ ……约 9V 图 4-16 (见附图册)为 110V/48V 斩波电源电路原理图,其工作原理可参照第(一)部分的说明分析。二、 6s .改型机车 DC110V 八 5V、 24V 、 48V 斩波电源本电源按 6U 标准结构设计,将电路中的所有元器件都设计在一块 6U 结构的电路板上, 底板大小为(220 X 233. 35)mm2 ,电源厚度为 16R=16X 5. 08=81. 28 mm 。本电源具有输入过、欠压保护、辅助电源欠压保护、各路输出过流及过、欠压保护功能。另外, 本电源还具备二次起动保护功能。其外形见图 4-17 。电源主要技术参数输入直流电压······················································ …… 77-137. 5V 输出直流电压·········································· …… 15 士钾, 24土钾、 48 士钾· 104 · 图 4-16 (见附图册)为 110V/48V 斩波电源电路原理图,其工作原理可参照第(一)部分. 的说明分析。二、 SS .改型机车 DC110V 八 5V、 24V 、 48V 斩波电源本电源按 6U 标