摘 要:穩(wěn)壓電源是用電器必不可少的能源動(dòng)力,其要求有較高的穩(wěn)定性和實(shí)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(huì)方便經(jīng)濟(jì)很多。在滿足穩(wěn)壓電源的基本性能上,利用數(shù)字電路的快捷傳輸特性,將數(shù)字技術(shù)應(yīng)用到穩(wěn)壓電源中,實(shí)現(xiàn)其控制可調(diào)性。能在較寬的電源波動(dòng)范圍內(nèi)穩(wěn)定使用,適用于多種電壓范圍調(diào)控,可設(shè)計(jì)有多種輸出接口。該電源優(yōu)點(diǎn)在于方便實(shí)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(guān)鍵詞:數(shù)控;整流;濾波;可調(diào)級
中圖分類號:TM91 文獻(xiàn)標(biāo)識(shí)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(shù)字可調(diào)級步進(jìn)式穩(wěn)壓電源將數(shù)字技術(shù)作為源電源電路控制部分,以脈沖信號作同步可持續(xù)調(diào)諧,具有穩(wěn)定控制和連續(xù)選擇性能。其組織結(jié)構(gòu)由數(shù)控電路、D/A數(shù)模轉(zhuǎn)換電路、可調(diào)穩(wěn)壓電路以及供電電路組成。技術(shù)指標(biāo)為:輸出直流電源調(diào)節(jié)范圍為5~20 V,波紋小于10;穩(wěn)壓系數(shù)小于0.2;輸出電流為500 mA,數(shù)字可調(diào)級穩(wěn)壓電源方塊如圖1所示。
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