3842如何检查好坏 用万用表怎样判断3842好坏
\u5982\u4f55\u6d4b\u8bd5UC3842\u7684\u597d\u574f\uff1fUC3842 \u68c0\u6d4b\u597d\u574f\u7684\u65b9\u6cd5
\u5728\u56fd\u4ea7\u7684\u663e\u793a\u5668\u4e2d\uff0c\u7535\u6e90PWM\u63a7\u5236\u7535\u8def\u6700\u5e38\u7528\u7684\u96c6\u6210\u7535\u8def\u578b\u53f7\u5c31\u662fUC3842(\u6216KA3842)\uff0e\u4e0b\u9762\u7b80\u5355\u4ecb\u7ecd\u4e00\u4e0bUC3842\u597d\u574f\u7684\u5224\u65ad\u65b9\u6cd5\uff1a
\u5728\u66f4\u6362\u5b8c\u5916\u56f4\u635f\u574f\u7684\u5143\u5668\u4ef6\u540e\uff0c\u5148\u4e0d\u88c5\u5f00\u5173\u7ba1\uff0c\u52a0\u7535\u6d4bUC3842\u76847\u811a\u7535\u538b\uff0c\u82e5\u7535\u538b\u572810\uff0d17V\u95f4\u6ce2\u52a8\uff0c\u5176\u4f59\u5404\u811a\u4e5f\u5206\u522b\u6709\u6ce2\u52a8\u7684\u7535\u538b\uff0c\u5219\u8bf4\u660e\u7535\u8def\u5df2\u8d77\u632f\uff0cUC3842\u57fa\u672c\u6b63\u5e38\uff1b\u82e57\u811a\u7535\u538b\u4f4e\uff0c\u5176\u4f59\u7ba1\u811a\u65e0\u7535\u538b\u6216\u4e0d\u6ce2\u52a8\uff0c\u5219UC3842\u5df2\u635f\u574f\uff0e
\u5728UC3842\u76847\u30015\u811a\u95f4\u5916\u52a0\uff0b17V\u5de6\u53f3\u7684\u76f4\u6d41\u7535\u538b\uff0c\u82e5\u6d4b8\u811a\u6709\uff0b5V\u7535\u538b\uff0c1\u30012\u30014\u30016\u811a\u4e5f\u6709\u4e0d\u540c\u7684\u7535\u538b\uff0c\u5219UC3842\u57fa\u672c\u6b63\u5e38\uff0c\u5de5\u4f5c\u7535\u6d41\u5c0f\uff0c\u81ea\u8eab\u4e0d\u6613\u635f\u574f\uff0e\u5b83\u635f\u574f\u7684\u6700\u5e38\u89c1\u539f\u56e0\u662f\u7535\u6e90\u5f00\u5173\u7ba1\u77ed\u8def\u540e\uff0c\u9ad8\u7535\u538b\u4eceG\u6781\u52a0\u5230\u51766\u811a\u800c\u81f4\u4f7f\u5176\u70e7\u6bc1\uff0e\u800c\u6709\u4e9b\u673a\u578b\u4e2d\u7701\u53bb\u4e86G\u6781\u63a5\u5730\u7684\u4fdd\u62a4\u4e8c\u6781\u7ba1\uff0c\u5219\u7535\u6e90\u5f00\u5173\u7ba1\u635f\u574f\u65f6\uff0cUC3842\u548cG\u6781\u5916\u63a5\u7684\u9650\u6d41\u7535\u963b\u5fc5\u574f\uff0e\u6b64\u65f6\u76f4\u63a5\u66f4\u6362\u5373\u53ef\uff0e
\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u7535\u6e90\u5f00\u5173\u7ba1\u6e90\u6781(S\u6781)\u901a\u5e38\u63a51\u4e2a\u5c0f\u963b\u503c \u5927\u529f\u7387\u7684\u7535\u963b\u4f5c\u4e3a\u8fc7\u6d41\u4fdd\u62a4\u68c0\u6d4b\u7535\u963b\uff0e\u6b64\u7535\u963b\u7684\u963b\u503c\u4e00\u822c\u57280.2-0.6 \u4e4b\u95f4\uff0c\u5927\u4e8e\u6b64\u503c\u4f1a\u51fa\u73b0\u5e26\u4e0d\u8d77\u8d1f\u8f7d\u7684\u73b0\u8c61(\u5c31\u662f\u6b21\u6781\u7535\u538b\u504f\u4f4e)\uff0e
\u7531\u4e8eUC3842(KA3842)\u7684\u5de5\u4f5c\u7535\u538b\u548c\u8f93\u51fa\u529f\u7387\u5747\u4e0eUC3843(KA3843)\u76f8\u5dee\u751a\u8fdc\uff0c 3842\u7cfb\u5217\u548c3843\u7cfb\u5217\u5728\u542f\u52a8\u7535\u538b\u548c\u5173\u95ed\u7535\u538b\u65b9\u9762\u4e5f\u5b58\u5728\u7740\u8f83\u5927\u7684\u533a\u522b.\u524d\u8005\u7684\u542f\u52a8\u7535\u538b\u4e3a16V,\u5173\u95ed\u7535\u538b\u4e3a10V;\u540e\u8005\u7684\u542f\u52a8\u7535\u538b\u4e3a8.5V\uff0c\u5173\u95ed\u7535\u538b\u4e3a7.6V\u3002\u8fd9\u4e24\u4e2a\u7cfb\u5217\u7684IC\u4e0d\u80fd\u76f4\u63a5\u4ee3\u6362\u3002\u5982\u786e\u6709\u5fc5\u8981\u7528\u540e\u8005\u4ee3\u6362\u524d\u8005\u65f6\uff0c\u8981\u5bf9\u7535\u8def\u52a0\u4ee5\u6539\u9020\u65b9\u53ef\u3002
IMG_2406
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绛旓細鍥炵瓟锛歎C3842 閲囩敤鍥哄畾宸ヤ綔棰戠巼鑴夊啿瀹藉害鍙帶璋冨埗鏂瑰紡,鍏辨湁8 涓紩鑴,鍚勮剼鍔熻兘濡備笅: 鈶 鑴氭槸璇樊鏀惧ぇ鍣ㄧ殑杈撳嚭绔,澶栨帴闃诲鍏冧欢鐢ㄤ簬鏀瑰杽璇樊鏀惧ぇ鍣ㄧ殑澧炵泭鍜岄鐜囩壒鎬; 鈶 鑴氭槸鍙嶉鐢靛帇杈撳叆绔,姝よ剼鐢靛帇涓庤宸斁澶у櫒鍚岀浉绔殑2.5V 鍩哄噯鐢靛帇杩涜姣旇緝,浜х敓璇樊鐢靛帇,浠庤屾帶鍒惰剦鍐插搴; 鈶 鑴氫负鐢垫祦妫娴杈撳叆绔, 褰...
绛旓細uc3842 7鑴氱數鍘嬭揪鍒16V灏辫兘鍚姩锛屽伐浣滅數娴100mA锛8鑴氭湁5V锛6鑴氭病鏈夎剦鍔ㄧ數鍘嬨 鍘熷洜鏄厜钘曟病鏈夌數锛3842璁や负杈撳嚭鐢靛帇浣庯紝鎵浠ヤ笉鏂鍔6鑴氳緭鍑鸿剦鍐插崰绌烘瘮锛屾帴杩100%銆 鎴戝仛杩囦竴娆 缁欑數璺鎺ョ數婧愶紝鐢靛帇涓婅皟鍒16V鍚庯紝鐢佃矾寮濮嬪伐浣溿傜粰鍏夎棔鍜孴L431鍔犵數锛岋紵鑴氱數鍘嬬敱2銆5V浠ヤ笅鍗囧埌2銆5V鏃讹紝3842 6鑴 鐢靛帇...
绛旓細8鑴氭湁5V锛6鑴氭病鏈夎剦鍔ㄧ數鍘嬨傚師鍥犳槸鍏夎棔娌℃湁鐢碉紝3842璁や负杈撳嚭鐢靛帇浣庯紝鎵浠ヤ笉鏂鍔6鑴氳緭鍑鸿剦鍐插崰绌烘瘮锛屾帴杩100%銆傛垜鍋氳繃涓娆＄粰鐢佃矾澶栨帴鐢垫簮锛岀數鍘嬩笂璋冨埌16V鍚庯紝鐢佃矾寮濮嬪伐浣溿傜粰鍏夎棔鍜孴L431鍔犵數锛岋紵鑴氱數鍘嬬敱2銆5V浠ヤ笅鍗囧埌2銆5V鏃讹紝3842 6鑴氱數鍘嬬敱15.3涓嬮檷鍒0V銆傚悓鏃跺鎺ョ數婧愯緭鍑虹數娴佸ぇ骞呬笂鍗囥
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