應急(ji)燈(deng)(deng)在(zai)家庭、酒店、學校等場所都是必須配備的燈(deng)(deng)具產(chan)品之一，原因是應急(ji)燈(deng)(deng)在(zai)安全疏散和(he)通道照明(ming)中起到了舉足(zu)輕(qing)重的作用(yong)，那么到底應急(ji)燈(deng)(deng)的工作原理是什么呢?下(xia)面就讓大成(cheng)智慧應急(ji)燈(deng)(deng)廠(chang)家的小編(bian)為大家詳(xiang)細介紹，具體內容如下(xia)：

　　應急燈工作原理(li)：

　　1、在供(gong)電(dian)(dian)正常時(shi)，J2(聚電(dian)(dian)器)得電(dian)(dian)吸合，其動(dong)觸(chu)點與(yu)“N/O(常開點)”接通，后備蓄電(dian)(dian)池正端(duan)與(yu)IC1的(de)反相端(duan)相聯。IC1(LM308)和D5、D6組成電(dian)(dian)壓(ya)比較器，參(can)考(kao)電(dian)(dian)壓(ya)由D5、D6決定。這里用(yong)一個硅二極(ji)管(D5)和一個6.2V的(de)穩壓(ya)二極(ji)管(D6)組成6.9V的(de)參(can)考(kao)電(dian)(dian)壓(ya)，對充電(dian)(dian)壓(ya)電(dian)(dian)壓(ya)進行監(jian)控。

　　2、當IC1的2腳輸(shu)(shu)入(ru)電(dian)(dian)(dian)(dian)(dian)壓(ya)(既(ji)蓄(xu)電(dian)(dian)(dian)(dian)(dian)池電(dian)(dian)(dian)(dian)(dian)壓(ya))低于6.9V時(shi)，IC1的6腳輸(shu)(shu)出高電(dian)(dian)(dian)(dian)(dian)平，T1導通(tong)，J1(聚(ju)電(dian)(dian)(dian)(dian)(dian)器)得電(dian)(dian)(dian)(dian)(dian)，其動觸點與(yu)“N/O(常開點)”接通(tong)，電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)壓(ya)通(tong)過R2對蓄(xu)電(dian)(dian)(dian)(dian)(dian)池充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)，同時(shi)LED2點亮為充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)指示。改變R2阻值可(ke)調整(zheng)充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)電(dian)(dian)(dian)(dian)(dian)流。隨著充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)時(shi)間增加(jia)，IC1的2腳電(dian)(dian)(dian)(dian)(dian)壓(ya)逐漸增加(jia)，當電(dian)(dian)(dian)(dian)(dian)壓(ya)大于參考電(dian)(dian)(dian)(dian)(dian)壓(ya)6.9V時(shi)，IC1的6腳輸(shu)(shu)出低電(dian)(dian)(dian)(dian)(dian)平，T1截止，J1(聚(ju)電(dian)(dian)(dian)(dian)(dian)器)失電(dian)(dian)(dian)(dian)(dian)，斷開充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)回(hui)路，實現自動充(chong)(chong)(chong)電(dian)(dian)(dian)(dian)(dian)保護功能。

　　3、當停電(dian)(dian)時(shi)，J2(聚電(dian)(dian)器)失(shi)去電(dian)(dian)源，其動(dong)觸點與“N/C(常閉點)”接(jie)通，蓄電(dian)(dian)池(chi)通過S1對應(ying)(ying)急(ji)燈(deng)電(dian)(dian)路供電(dian)(dian)，實現停電(dian)(dian)時(shi)自動(dong)切換功(gong)能。S1在這里用來手動(dong)切斷應(ying)(ying)急(ji)燈(deng)電(dian)(dian)路部分。

　　4、由IC2(NE555)、T2、T3、T4、X2等組成(cheng)應急(ji)燈(deng)電(dian)(dian)路。IC2組成(cheng)50Hz信號(hao)發(fa)生器(qi)(qi)，由IC2的(de)3腳(jiao)輸出50Hz信號(hao)，經T2反相、放大(da)分別驅(qu)動由T3、T4、X2組成(cheng)的(de)推挽電(dian)(dian)路，在X2的(de)高壓側感應出220V的(de)交(jiao)流(liu)電(dian)(dian)，使日(ri)光燈(deng)管點亮。這里的(de)X2可以直接使用(yong)次(ci)級為(wei)(wei)4.5伏、初級為(wei)(wei)220V的(de)成(cheng)品電(dian)(dian)源(yuan)變壓器(qi)(qi)，功(gong)率(lv)試日(ri)光燈(deng)管的(de)功(gong)率(lv)而定。使用(yong)時，注意T3、T4應加(jia)散熱器(qi)(qi)。

　　以上內容就是小編給大家講解的應急燈定義及分類，今天內(nei)容就和大(da)家(jia)分享(xiang)到這里，如(ru)果想要(yao)了(le)解更多(duo)關(guan)于(yu)應(ying)急(ji)燈(deng)的相關(guan)知識，請關(guan)注大(da)成(cheng)智(zhi)慧應(ying)急(ji)燈(deng)廠家(jia)網站(//migourl.cn/)，我們(men)會(hui)定期(qi)更新內(nei)容;如(ru)果想要(yao)咨詢(xun)(xun)應(ying)急(ji)燈(deng)價格，歡(huan)迎(ying)來電咨詢(xun)(xun)或(huo)者是網站留言，我們(men)會(hui)及時與(yu)你聯系，咨詢(xun)(xun)熱線(xian)：13342982185