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POWER AMPLIFIER BOARD
TABLE OF CONTENTS
LM3886 & UPC1237 Internal Block .............................. 12-1
Components Layout + Voltages .................................... 12-2
Circuit Diagram .............................................................. 12-3
Electrical parts list .......................................................... 12-4
12-1
10/21/2012
LM3886 INTERNAL BLOCK
LM3886
10
+
V
+
IN
9
-
V
-
IN
7
GND
uPC1237 INTERNAL BLOCK
uPC1237
1
Overload detector
2
Output Offset detector
Switch for latch/automatic - reset
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12-1
V+
V+
NC
NC
NC
1
5
2
11
6
3
OUTPUT
4
8
V-
MUTE
Vcc
7
8
Vcc ON
mute
AC - OFF detector
5
3
4
GND
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6
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