å½ç¶TDA7850,4+50Wå´æ¯å¨4欧çæ¡ä»¶ä¸ã8欧ååä¹åªæ大æ¦30Wå·¦å³ãå å¼æ²¡çæ¸ æ说çæ¯+-12Vççµæºä¹å°±æ¯ä¸¤ä¸ªçµç¶ä¾çµãè¿æä¸ç§æ¹æ³ï¼å°±æ¯å¨ICçåé¦çµé»å 大ï¼ä¹è½æ¾å¤§åçï¼å¦22Kåé¦çµé»æ¢æ68Kãä¸è¿è¿æ¯æè°¢ä½ ç¬¬ä¸æ¶é´åå¤ï¼