自制電蚊拍電路圖詳解

電蚊拍自制電路圖主要由高頻振蕩電路、三倍壓整流電路和高壓電擊網三部分組成。當按下電源開關SB時，由三極管VT和變壓器T構成的高頻振蕩器通電工作，把3V直流電變成18kHz左右的高頻交流電，經T升壓到約500V（L3兩端實測），再經二極管VD2～VD4、電容器C1～C3三倍壓整流升高到1500V左右，加到蚊拍的金屬網DW上。當蚊蠅觸及金屬網絲時，蟲體造成電網短路，即會被電流、電弧殺灼或擊暈、擊斃。電路中，發光二極管VD1和限流電阻器R1構成指示燈電路，用來指示電路通斷狀態及顯示電池電能的耗損情況。

該圖片由注冊用戶"異想天開"提供，版權聲明反饋

電蚊拍電路工作原理

電(dian)(dian)(dian)(dian)蚊(wen)(wen)(wen)拍手柄上有一個功能開(kai)(kai)關(guan)(guan)SW，SW開(kai)(kai)關(guan)(guan)共有三檔，向(xiang)上推是第(di)一檔。這(zhe)時(shi)(shi)開(kai)(kai)關(guan)(guan)接通電(dian)(dian)(dian)(dian)池(chi)BT正極(ji)，電(dian)(dian)(dian)(dian)流通過開(kai)(kai)關(guan)(guan)經(jing)LED3、電(dian)(dian)(dian)(dian)阻R5構(gou)成回路，使照(zhao)明燈LED3點(dian)亮，也可在(zai)此狀態下(xia)打蚊(wen)(wen)(wen)子（耗電(dian)(dian)(dian)(dian)高）；中間(jian)檔是第(di)二檔。當將(jiang)(jiang)SW開(kai)(kai)關(guan)(guan)放置(zhi)在(zai)中間(jian)部位時(shi)(shi)，是為了給電(dian)(dian)(dian)(dian)池(chi)BT充(chong)電(dian)(dian)(dian)(dian)。當電(dian)(dian)(dian)(dian)蚊(wen)(wen)(wen)拍電(dian)(dian)(dian)(dian)池(chi)沒(mei)電(dian)(dian)(dian)(dian)時(shi)(shi)，要將(jiang)(jiang)手柄下(xia)端的(de)(de)單相(xiang)插(cha)(cha)頭釋放出(chu)(chu)來，插(cha)(cha)到～220V插(cha)(cha)座上，D1～D4組(zu)成的(de)(de)硅整流橋給電(dian)(dian)(dian)(dian)池(chi)BT充(chong)電(dian)(dian)(dian)(dian)，LED1被點(dian)亮（充(chong)電(dian)(dian)(dian)(dian)指(zhi)示）；將(jiang)(jiang)SW開(kai)(kai)關(guan)(guan)向(xiang)下(xia)拉是第(di)三檔。這(zhe)是準備進行滅(mie)蚊(wen)(wen)(wen)工(gong)(gong)作(zuo)。當按下(xia)S1微動(dong)開(kai)(kai)關(guan)(guan)時(shi)(shi)LED2被點(dian)亮（滅(mie)蚊(wen)(wen)(wen)電(dian)(dian)(dian)(dian)路工(gong)(gong)作(zuo)指(zhi)示），Q1、R6、C2、R4和(he)變(bian)壓(ya)器B的(de)(de)初級線(xian)圈組(zu)成的(de)(de)振蕩電(dian)(dian)(dian)(dian)路開(kai)(kai)始工(gong)(gong)作(zuo)，并(bing)在(zai)變(bian)壓(ya)器的(de)(de)次級線(xian)圈感應(ying)出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)，經(jing)D5～D8和(he)C3～C6組(zu)成的(de)(de)倍壓(ya)整流電(dian)(dian)(dian)(dian)路，將(jiang)(jiang)輸出(chu)(chu)電(dian)(dian)(dian)(dian)壓(ya)迅速提升至1600V左右(you)以滅(mie)殺蚊(wen)(wen)(wen)蠅（新拍應(ying)達到1800V以上）。