小林子：
已經(jīng)做出來(lái)了,可電流波形不太對(duì),如圖,有個(gè)負(fù)的電流呀,有負(fù)一百多安,比正電流還大,改過(guò)變壓器繞法,沒(méi)用.請(qǐng)問(wèn)各位,這個(gè)電流哪來(lái)呢?輸入24v,輸出350伏,500W.變壓器是PQ5050[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/39/1143126796.jpg');}"onmousewheel="returnimgzoom(this);">[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/39/1143126839.jpg');}"onmousewheel="returnimgzoom(this);">