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红外遥控发射电路BL9148B http://www.belling.com.cn - 7 - 8/24/2006 Total 9 Pages Wrote by dipeng 九 九 九 九. .. . 应用线路图 BL9148B 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 V DD Tx out TESTBCODE T 3 T 2 T 1 K 6 K 5 K 4 K 3 K 2 K 1 XTB XT GND 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 Key Matrix K 1~K6 T 1~T3 V DD=3V 2SA1015 2SC1815 TLN105 10K 10K 47uF |
