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 一、電路功能

     本電路可用于計(ji)時(shi)，所定時(shi)間可以(yi)調整。將定時(shi)器(qi)(qi)調到一(yi)個時(shi)間，當(dang)手(shou)觸摸(mo)按鍵“OK”，數(shu)碼(ma)(ma)管開(kai)始計(ji)時(shi)，當(dang)計(ji)時(shi)器(qi)(qi)計(ji)時(shi)到所定的時(shi)間時(shi)，蜂鳴器(qi)(qi)響，數(shu)碼(ma)(ma)管數(shu)字顯示定時(shi)的時(shi)間。

    模擬(ni)電冰箱電路說(shuo)明(ming)與調試

一、模(mo)擬電冰箱電路的(de)工(gong)作過程

    模擬電(dian)(dian)冰(bing)箱(xiang)(xiang)電(dian)(dian)路(lu)用制(zhi)冷(leng)(leng)片置冷(leng)(leng)，模仿電(dian)(dian)冰(bing)箱(xiang)(xiang)的工作過程，本電(dian)(dian)路(lu)可以通過開關設置電(dian)(dian)冰(bing)箱(xiang)(xiang)溫(wen)(wen)度(du)(du)(du)和上下限溫(wen)(wen)度(du)(du)(du)，電(dian)(dian)冰(bing)箱(xiang)(xiang)制(zhi)冷(leng)(leng)強度(du)(du)(du)，當冰(bing)箱(xiang)(xiang)內溫(wen)(wen)度(du)(du)(du)超(chao)出限定溫(wen)(wen)度(du)(du)(du)時，蜂鳴器報警(jing)，冰(bing)箱(xiang)(xiang)門(men)沒關時，冰(bing)箱(xiang)(xiang)報警(jing)。數(shu)碼管可以顯示電(dian)(dian)冰(bing)箱(xiang)(xiang)當前溫(wen)(wen)度(du)(du)(du)，冰(bing)箱(xiang)(xiang)制(zhi)冷(leng)(leng)強度(du)(du)(du)。

 1、電冰箱關門電路：按下開(kai)關S1接(jie)通電源D4亮(liang)，將手放在紅外(wai)發(fa)射、接(jie)收管(guan)（F1、F2）前(qian)1cm處，蜂鳴器(qi)LS1報(bao)警D7亮(liang)。即(ji)電冰箱門開(kai)時報(bao)警。

2、電冰(bing)(bing)箱(xiang)(xiang)(xiang)(xiang)溫(wen)(wen)度(du)：按下開關(guan)S1后數(shu)(shu)碼(ma)管顯(xian)(xian)(xian)示(shi)冰(bing)(bing)箱(xiang)(xiang)(xiang)(xiang)溫(wen)(wen)度(du)，再按K2數(shu)(shu)碼(ma)管顯(xian)(xian)(xian)示(shi)“H0**”，此時(shi)(shi)按K3、K4可(ke)以(yi)設置(zhi)冰(bing)(bing)箱(xiang)(xiang)(xiang)(xiang)溫(wen)(wen)度(du)上限，第二(er)次按K2，數(shu)(shu)碼(ma)管顯(xian)(xian)(xian)示(shi)“A**C”，此時(shi)(shi)按K3、K4可(ke)以(yi)設置(zhi)冰(bing)(bing)箱(xiang)(xiang)(xiang)(xiang)溫(wen)(wen)度(du)，第三次按K2，數(shu)(shu)碼(ma)管顯(xian)(xian)(xian)示(shi)“L0**”，此時(shi)(shi)按K3、K4可(ke)以(yi)設置(zhi)冰(bing)(bing)箱(xiang)(xiang)(xiang)(xiang)溫(wen)(wen)度(du)下限。

電(dian)冰箱(xiang)(xiang)溫(wen)(wen)(wen)度高(gao)于(yu)設置的溫(wen)(wen)(wen)度上(shang)限時蜂鳴(ming)器LS2響(xiang)，D12亮(liang)(liang)，電(dian)冰箱(xiang)(xiang)溫(wen)(wen)(wen)度低于(yu)設置的溫(wen)(wen)(wen)度下限時蜂鳴(ming)器LS2響(xiang)，D13亮(liang)(liang)，溫(wen)(wen)(wen)度在上(shang)下限之間(jian)，冰箱(xiang)(xiang)工作正(zheng)常時，D11亮(liang)(liang)。

3、電(dian)冰箱制(zhi)冷強度：按下(xia)K1，數(shu)(shu)碼(ma)管顯示“d.-01”，冰箱進入(ru)制(zhi)冷強度調節，按K3、K4數(shu)(shu)碼(ma)管顯示數(shu)(shu)字(zi)增加，減小，數(shu)(shu)值越(yue)大，制(zhi)冷速(su)度越(yue)快，電(dian)機(ji)轉速(su)越(yue)快。