{"type":"product","schema_version":"1.0","item_id":"100949830179","canonical_url":"https://tw.bid.yahoo.com/item/100949830179","title":"►668◄PAM8403 超迷你數字功放板 小功放板 USB供電 大功率3W雙聲道","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-05-02T20:40:44.811Z","current_price":20,"original_price":null,"stock_status":"in_stock","available_quantity":995,"sold_quantity":4,"seller":{"id":"Y2849097376","name":"宇倉電子-全館(已含稅)開發票","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/3daf7c4c-be0c-4b9a-b626-ff25554fa750.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/5333ceed-f381-4149-a9b0-2ecb52ebc3df.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/b8447eac-8935-4245-bac8-e4c65726d7a7.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null}],"description":"超迷你數字功放板，10年新型高效數字功放，輸入5V時獲得[3 x 2]6W的功率，超薄型板子，可非常方便放入小塑膠盒或其它設備的縫隙裡，如打造MP3/4或筆記本外置小音箱等，任你想像，電源建議取USB的5V或用單節鋰電供電。\n\n   《優點》：10年新出高效數位功放晶片，內部特殊輸出處理電路，取消了傳統的LC網路，比用LC的更低的EMI值！在較低電壓下獲得最大功率輸出，超級省 電，內置待機電子開關，內置高增益緩衝放大器，內置短路保護。《電源》：3.6至5.5V，單節鋰電或USB供電適宜，也可用四節1.2V電池供電，用變 壓器供電一定要加5V穩壓電路，超過5.5V晶片將燒壞。\n\n《參數》：\n\n電源：直流（DC）：3.6v－5.5V\n\n輸出功率：3W+3W（4歐）\n\n信噪比：90dB\n\n效率：>90%\n\n尺寸：24*15.5*mm    定位孔尺寸：間距20mm 孔徑：2mm\n\n《注意事項》：\n\n1：電源正負極不能接反，電源電壓不能超過5.5V，這兩條違規會致使IC損壞。\n\n2：片內有高增益緩衝器，不能改動板上任何元件參數，不符合的參數將導致IC損壞。\n\n3：輸入線請儘量用帶遮罩的線，可以起到抗干擾作用，消除雜波電流聲。\n\n4：輸出為cmos管BTL驅動方式，左右喇叭的負極不能夠接在一起，即接喇叭的4條線是完全獨立的，不允許共接！","shipping_methods":[{"name":"郵局掛號","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","信用卡一次付清","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092073513","category_name":"其他耗材","breadcrumb":[{"id":"23336","name":"電腦、平板與周邊","url":"/tw/%E9%9B%BB%E8%85%A6%E3%80%81%E5%B9%B3%E6%9D%BF%E8%88%87%E5%91%A8%E9%82%8A-23336-category.html"},{"id":"2092072621","name":"耗材與線材","url":"/tw/%E8%80%97%E6%9D%90%E8%88%87%E7%B7%9A%E6%9D%90-2092072621-category.html"},{"id":"2092073513","name":"其他耗材","url":"/tw/%E5%85%B6%E4%BB%96%E8%80%97%E6%9D%90-2092073513-category.html"}],"view_count":0,"watch_count":1}