關(guān)于反激電源占空比的問題
現(xiàn)有一個(gè)開關(guān)電源,15w,但在低端(85Vac)的時(shí)候,低頻紋波太大(100HZ),在不能做斜率補(bǔ)償?shù)那闆r下,是不是就要減小占空比呢?如果減小占空比的話是增大輸出匝數(shù)還是減小輸出匝數(shù)呢?{Np/Ns=Vf/Vout Vindcmin*Dmax=Vf(1-Dmax)}
全部回復(fù)(5)
正序查看
倒序查看
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/35/1132280614.gif');}" onmousewheel="return imgzoom(this);"> 0
回復(fù)
@pwmctl
[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/35/1132280614.gif');}"onmousewheel="returnimgzoom(this);">
頂
0
回復(fù)
@pwmctl
[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/35/1132280614.gif');}"onmousewheel="returnimgzoom(this);">
頂
0
回復(fù)
@pwmctl
[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/35/1132280614.gif');}"onmousewheel="returnimgzoom(this);">
我想減小占空比的話應(yīng)是增大輸出匝數(shù)
但對(duì)輸出紋波有好處嗎?
但對(duì)輸出紋波有好處嗎?
0
回復(fù)
@pwmctl
[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/35/1132280614.gif');}"onmousewheel="returnimgzoom(this);">
如果減小占空比的話是增大輸出匝數(shù),我看還是要注意你的濾波電路.
0
回復(fù)
