å¤ç´ ç¯çµåååå¨è¾åºçµåæ¯12v交æµçµï¼åªè¦å å ¥æ´æµæ»¤æ³¢å å¨ä»¶ï¼å³å¯åæç´æµçµãéè¦æ³¨æçæ¯ï¼ç±äºçµåååå¨çæ¯è¡çµè·¯é¢çè¾é«ï¼åºè¯¥ä½¿ç¨å¿«éæ´æµäºæ管ãæèç¹åºäºæ管ï¼æ»¤æ³¢çµå®¹ä¹å¯ä»¥å°ä¸äºãå ¶å®ä¸æ®éçå·¥é¢æ´æµã滤波没æ大çå·®å«ã