【導(dǎo)讀】近來,某寶客發(fā)布了許多3元包郵的LED燈,價格倒是便宜,可惜的是設(shè)置了許多條件,限時、限號、限數(shù)、限送…既然買不到,不如自己動手來做。所有材料準(zhǔn)備齊全,隨電子元件技術(shù)網(wǎng)一起DIY閃亮的LED球泡燈吧!
購買的材料,LED燈珠、驅(qū)動、散熱鋁、燈罩、燈頭、燈板
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散熱鋁,沉甸甸的
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散熱鋁 外型
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散熱鋁 內(nèi)腔
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燈板固定座
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環(huán)形鋁圈用來固定燈罩
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燈板,有1W、3W、5W、7W、9W,一個比一個大
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因為我選用的是1WLED燈珠,所以5W燈板就有五個LED燈珠焊接位
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燈板都是鋁基板
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驅(qū)動板 3~18W
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5W驅(qū)動板,商家用熱縮管包裹
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驅(qū)動板參數(shù):AC85-265V DC 9-18V 280-300mA 4-5W 過壓、過載、短路保護
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驅(qū)動板很小巧
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小心翼翼掀起電容,終于看到IC
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全波整流,400V4.7UF濾波,驅(qū)動IC SW7525
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芯片SW7525
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輸出電容50V22UF
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驅(qū)動板背面,牢記接線定義
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燈珠
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美國普瑞LED燈珠,4040芯片
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單個1W-3W,銅支架,4金線燈絲,120lm以上,正白
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果凍體是雙峰的,支架變帶缺口的是負極
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火線L接觸片
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火線L接觸片背面是一個帶螺紋的螺絲
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燈頭與散熱連接件,質(zhì)地很硬
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連接件內(nèi)部,驅(qū)動板就蝸居在這里面
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E27燈頭
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燈頭的尾部,火線L連接片就插入此孔
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零線N需要接在燈頭的鋁環(huán)上
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燈罩有磨砂、乳白和透明的,選用透明的
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就要將這些東東組裝在一起
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用單鋰檢查所用燈珠,LED燈珠底部不想也不會焊接,請出導(dǎo)熱硅脂
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涂導(dǎo)熱硅脂不需要多,力求薄、勻
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將燈珠按極性粘在焊盤上,用手輕輕按按
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焊接時間盡量短些,用鑷子來散熱
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如法炮制,焊接好所有燈珠
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檢查驅(qū)動板,空載0.22W,輸出電壓23.46V,看板子說明,會根據(jù)所接燈板自動調(diào)節(jié)
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空載市電電流
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燈板座同樣圖上導(dǎo)熱硅脂
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用螺絲固定燈板
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按標(biāo)志焊接電源線
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檢查無誤,通電,眼前一黑,嚇我一跳,太亮了
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將燈遠放,功率5.38W,驅(qū)動板電壓調(diào)整為15.08V
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串入電流表,驅(qū)動板電流290mA
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市電電流45mA
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組裝燈頭,安全第一,電工膠帶、熱縮管
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擰緊連接件,將驅(qū)動板從散熱鋁盡量向后拉
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將零線N套上熱縮管,撥出1CM纏繞在螺紋的凹槽內(nèi)
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擰緊燈頭,原先擔(dān)心零線未焊接會不會安裝燈泡時燈頭會松落,實地一試擔(dān)心多余,非常緊固
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火線L套熱縮管從尾部穿出
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將線纏繞在螺釘上,插入塑料孔內(nèi)
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壓緊螺釘
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燈頭組裝完成
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將燈罩輕輕按入鋁環(huán)的凹槽內(nèi),放心,燈罩不是玻璃的,塑料的有些許彈性
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將燈罩組件按螺紋安裝在散熱鋁上,擰緊
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點亮五分鐘,散熱片溫度微升,大熱天的,收工!
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