摘 要:穩壓電源是用電器必不可少的能源動力,其要求有較高的穩定性和實用性。通常中,一種用電器相對于一定值電源電壓,在相對于多種用電器中,一種多級供電電源可以用來備接交替使用,會方便經濟很多。在滿足穩壓電源的基本性能上,利用數字電路的快捷傳輸特性,將數字技術應用到穩壓電源中,實現其控制可調性。能在較寬的電源波動范圍內穩定使用,適用于多種電壓范圍調控,可設計有多種輸出接口。該電源優點在于方便實用,且成本低廉,在低壓用電器中可以取代多種電源即一源多用,也適用于旅行攜帶。
關鍵詞:數控;整流;濾波;可調級
中圖分類號:TM91 文獻標識碼:B 文章編號:1004373X(2008)1709902
Design of Numerical Adjustable Step Regulated Power Supply
HAN Wei
(Automatic Project Institute,Qingdao University,Qingdao,266071,China)
Abstract:Regulated power supply is necessary power of energy instrument,it is demanded more higher performance of stable and practical.Usually,Each electric equipment which is comparatively in certain value voltage of powers,comparatively in many kinds of electric equipments,a multi-level power supply can be used alternately,it is convenient and economy.On basical performance of regulated power supply,using characteristics of fast transformation of numerical circuit to realize adjustable control.It is fit for variable voltage adjustment,many kinds of output interface can be designed.The power supply has advantages of convinent,practical,low-cost and portable.
Keywords:numerical control;rectification;filter;adjustable grade
本數字可調級步進式穩壓電源將數字技術作為源電源電路控制部分,以脈沖信號作同步可持續調諧,具有穩定控制和連續選擇性能。其組織結構由數控電路、D/A數模轉換電路、可調穩壓電路以及供電電路組成。技術指標為:輸出直流電源調節范圍為5~20 V,波紋小于10;穩壓系數小于0.2;輸出電流為500 mA,數字可調級穩壓電源方塊如圖1所示。
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