摘 要
任何一種電路都需要電源，它是電子電路工作的“能源”和“動力”。不同的電路對電源的要求是不同的。在很多電子設備和電路中需要一種當電網電壓波動或負載發生變化時，輸出電壓仍能基本保持不變的電源。電子設備中的電源一般由交流電網提供，再經變壓、整流、濾波、和穩壓四個主要部分構成。本設計的主要內容是圍繞著如何使串聯可調直流穩壓電源輸出直流電壓穩定、脈動成分減小而展開的。首先介紹了全波整流電路的工作原理，接著介紹了電容濾波電路的性能特點，然后引入了具有放大環節和輔助電源的串聯可調式穩壓電源，并在電路中采用了提高穩定度，提高溫度穩定性及限流型過流保護電路的具體措施，以確保電路安全穩定的工作。
關鍵詞：電源、穩壓、整流、濾波、保護
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
