輸入18V的交流電,不帶負(fù)載時(shí)可以正常工作,實(shí)現(xiàn)升壓.帶上16R的電阻后,輸出電壓降低.比如,空載輸出26V,帶負(fù)載輸出21V.
還有就是3842輸出的占空比好高.
哪位高人指點(diǎn)一下,哪里有問(wèn)題.
急救!!!UC3842 升壓電源
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@zxtlxy
[圖片]500){this.resized=true;this.width=500;this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動(dòng)鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}"onclick="if(!this.resized){returntrue;}else{window.open('http://u.dianyuan.com/bbs/u/80/3508391250421023.gif');}"onmousewheel="returnimgzoom(this);">
剛才傳的圖有個(gè)小問(wèn)題
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500) {this.resized=true; this.width=500; this.alt='這是一張縮略圖，點(diǎn)擊可放大。\n按住CTRL，滾動(dòng)鼠標(biāo)滾輪可自由縮放';this.style.cursor='hand'}" onclick="if(!this.resized) {return true;} else {window.open('http://u.dianyuan.com/bbs/u/80/3508391250421380.gif');}" onmousewheel="return imgzoom(this);"> 0
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