文档介绍：考试序列号通识教育课程论文论文题目:串联型直流稳压电源课程名称:模电课程设计报告学院:物理与光电工程学院专业班级:电子科学与技术1班学号:3113008287姓名:余再兴联系方式:**********任课教师:罗荣芳2014年12月25日目录一、设计题目·····································1二、设计任务和要求································1三、原理电路和程序设计:······························11、方案比较····································1ⅰ.整流电路····································1ⅱ.稳压电路····································22、整体电路···································33、单元电路设计·······························3①单相桥式整流滤波电路························3②稳压管稳压电路····························4四、电路工作原理································5五、元器件清单·································6六、电路和程序调试过程与结果·······················6①仿真数据··································6②实测数据·································7③误差分析·································8七、总结与体会·································9八、参考文献·······································:。指标:、9V两档。:额定电流为150mA,最大电流为500mA(这个指标验收时可放松些);▲Vop-p≤5mv。:ⅰ.整流电路:①单相半波整流单相半波整流电路简单易行,所用二极管数量少。但是由于它只利用了交流电压的半个周期,所以输出电压低,纹波大,效率低。因此,这种电路仅适用于整流电流较小,对脉动要求不高的场合。②单相桥式整流电路而单相全桥桥式整流电路效率高,输出波纹与半波相比,波纹小,,对于滤波电容要求容量要小。故根据任务要求,故选择单相桥式整流电路。ⅱ.稳压电路①用晶体管和集成运放组成的基本串联型直流稳压电源。缺少滤波电路,会导致输出的纹波较大。②用晶体管和集成运放以及滤波电路的基本串联型直流稳压电源。电路较方案一来说,增加了滤波电路,减少输出的纹波,调整管用了8050和TIP41C,从而增加了电路的输出稳定性。因此根据任务要求,采用方案二。,所以整流部分可以用单相桥式整流电路。而二极管的选择:结合参考资料,我们知道二极管的平均电压为其中为变压器次级交流电压的有效值。可以求得,二极管承受的最大反向电压为,因此我们使用二极管1N4007。输入的波形经过桥式整流后电容滤波后根据计算公式由于输出电压最大约为9V,最大输出电流为500mA,此时负载大约18Ω,计算的滤波电容为1667-2750uf,,因此电容的耐压值为,结合实际采用标准电阻2200uf,耐压为25V的电解电容。稳压管稳压电路二极管与构成基准稳压电路。二极管是稳压管,其稳压值应该小于最小输出电压U,但不能过小,否则会影响稳定度,。是限流电阻。三极管和是调整管,为电路引入深度负反馈,使得输出电阻趋于零和输出电压可调,提高输出电压的稳定性(为了使输出电压更加稳定和输出的纹波较小,故采用双三极管进行深度负反馈)。由于输出电流较大,为防止电流过大烧坏调整管,需要选择功率中等或者较大的三极管,调整管的击穿电流必须大于500mA,又由于三极管CE间的承受的最大管压降应该大于15-6=9V,考虑到30%的电网波动,我们的调整管所能承受的最大管压降应该大于13V,最小功率应该达到=。故选用LM324N和8050两个三极管。稳压原理:当由于某种原因(电网电压波动或负载电阻的变化等)使输出电压升高(降低),采样电路将这一变化趋势送到运放的反相输入端