如题所述
KIA7905PIä¸æ¯åºæåºç®¡ï¼æ¯ä¸åè¾åºä¸ºè´5Vçä¸ç«¯ç¨³åå¨ï¼ä¸LM7905æ¯ä¸æ ·çï¼åªæ¯ç产å家ä¸ä¸æ ·ã