文档介绍：正负12V稳压可调直流电源
作者:黄张祥张昊李松松

摘要
基于四个二极管通过电桥电路的连接,设计两个对称电路。在每个电路都是由整流电路(四个二极管组成)、滤波电路(几个电容组成)、稳压电路(LM317或LM337稳压器组成)和二次滤波电路(几个电容组成)。由LM317和LM337三端可调正负电压集成稳压器构成的正负输出稳压电源具有线路简单、外围元件少、稳压精度高、。通过滑动变阻器的控制和各元件的数据正确选择,达到一个正负12伏可调电源。在原理图上有一系列的电容,具有虑波的作用,这样就实现了直流的目的。
[关键词]电路稳压可调直流整流滤波
Abstract
Based on four diode bridge circuit by connecting the design of two symmetrical
circuit. In each circuit by the rectifier circuit is (four diodes), the filter circuit (composed of several capacitors), voltage regulator (LM317 or the LM337 voltage ponents) and secondary filter circuit (composed of several capacitors). The LM317 and LM337 three-terminal adjustable regulator constitute positive and negative voltage integrated power supply with positive and negative output line is simple, less ponents, the regulator, high precision, low cost protection function, and so on. So. Has been widely used. By sliding rheostat control and the correct choice of data elements to achieve a positive and negative 12 volt adjustable power supply. The schematic of a series of capacitors, has considered the role of waves, so to achieve the purpose of DC.
一、引言
电源是各种电子、电气设备工作的动力,是自动化部件不可缺少的组成部分,它广泛应用于科学研究、经济建设、国防设施及人民生活等各个方面,是电子设备和机电设备的基础。在电源的众多类型中,直流稳压电源应用最为广泛,它与国民经济各个部门息息相关,特别是在实验室、IT业、采矿、小型电器等领域中应用更为广泛。本实验需要实现双向12V直流稳压电源,220V交流电压需要经过变压器降压、二极管整流、电容滤波和集成稳压器稳压几个部分变成直流。
本次设计完成的直流稳压电源要满