有沒(méi)有人做過(guò)這種預(yù)熱啟動(dòng)電路?進(jìn)來(lái)指點(diǎn)下.
有沒(méi)有高手用過(guò)這種啟動(dòng)電路,效果怎么樣?我現(xiàn)在用這種電路作,無(wú)論怎么調(diào),PTC幾乎沒(méi)有預(yù)熱的作用,用了多種PTC,結(jié)果都是一開(kāi)電源,燈馬上就亮,根本沒(méi)有預(yù)熱的作用啊?麻煩高手指點(diǎn)!
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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/55/555531185236815.bmp');}" onmousewheel="return imgzoom(this);"> 0
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@liuliuliu
[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/55/555531185236815.bmp');}"onmousewheel="returnimgzoom(this);">
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/55/555531185237889.jpg');}" onmousewheel="return imgzoom(this);">
C9=6.8n,C10=75n,PTC=80歐 75度 Φ8,看看這樣的啟動(dòng)波形怎么樣?
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@liuliuliu
[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/55/555531185237889.jpg');}"onmousewheel="returnimgzoom(this);">C9=6.8n,C10=75n,PTC=80歐75度Φ8,看看這樣的啟動(dòng)波形怎么樣?
一開(kāi)始時(shí)最好沒(méi)有燈管電流好!
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