摘 要
任何一种电路都需要电源，它是电子电路工作的“能源”和“动力”。不同的电路对电源的要求是不同的。在很多电子设备和电路中需要一种当电网电压波动或负载发生变化时，输出电压仍能基本保持不变的电源。电子设备中的电源一般由交流电网提供，再经变压、整流、滤波、和稳压四个主要部分构成。本设计的主要内容是围绕着如何使串联可调直流稳压电源输出直流电压稳定、脉动成分减小而展开的。首先介绍了全波整流电路的工作原理，接着介绍了电容滤波电路的性能特点，然后引入了具有放大环节和辅助电源的串联可调式稳压电源，并在电路中采用了提高稳定度，提高温度稳定性及限流型过流保护电路的具体措施，以确保电路安全稳定的工作。
关键词：电源、稳压、整流、滤波、保护
Abstract
Any electric circuit all demand power supply, it is an electronics electric circuit"energy" and"motive" of the work. The electric circuit of dissimilarity request power supply to be a dissimilarity.At the demand in a lot of electronics equipments and electric circuit 1 kind be charged barbed wire net electric voltage motion or load occurrence variety, output electric voltage ability still basic keep constant of power supply.The power supply in the electronics equipments is general from exchanges the charged barbed wire net provide, again through change to press, commutate, filter wave, with steady press four main part constitute.The main contents of this design is around how make to establish adjustable direct current steady press power supply to output direct current electric voltage stability, the pulsation composition let up but launch.First introduction whole wave commutate electric circuit of work principle, immediately after introduction the electric capacity filter the function characteristics of an electric circuit, and in the electric circuit adoption exaltation stability, exaltation temperature stability and limit flow a type over flow protection electric circuit of concrete measure with insure an electric circuit safety stability of work.
Keyword:Power supply, steady press, commutate, filter wave, protection
