Microlab A-330 Schematics

4321
+VB
JK1
D
C
B
SW1
AC IN
A
R
L
R9
4.7K
R9'
4.7K
R11 10K
E4
1UF
F1 130C
1 2 3 4
T1
R10 100K
VR1A
B50K C101 221
VR1B
B50K
C101'
221
+VB
C6
104
R12
8
-VB
C104'
22K
7
U2B
4
C7 104
C104
223
223
6
5
D4
4xR205
D3
R13 10K
E1 1UF
E1' 1UF
C8 MC224
R14 10K
+VCC
D1
D2
-VCC -VB
R1 100K
R1' 100K
2
3
6
5
E12 4700UF 25V
E13 4700UF 25V
U1A 4558
-VB
U1B
2
3 1
U2A 4558
C9 MC104
R24
2.7K R22
470/0.25W
R23 470/0.25W
1
7
E5
0.47UF
LED1
VR2 B50K
LED
ZD1
9.1V
ZD2
9.1V
C1 MC472
R2
8.2K
C1' MC472
R2'
8.2K
+VB
R15
2.2K
E10 100UF/25V
E11 100UF/25V
R3
3.3K
R3'
3.3K
E6
0.47UF
C10 102
R4
6.8K
R4'
6.8K
R16 22K
E2
0.22UF
C2
MC472
0.22UF
C2' MC472
E2'
-VCC
R5 22K
R5' 22K
R17
22K
C3 CC102
C3' CC102
C102
C102'
C13' 104
1
2
1
2
C12 104
CC221
CC221
+VCC
U5
U6
E3
2.2UF
R6 680
E3'
2.2UF
R6' 680
TDA2030A 5
4
3
TDA2030A 5
4
3
E9' 100UF/25V
E8 100UF/25V
C12' 104
C13 104
R18 22K
E7 22uF
R19 680
R18' 22K
C7'
22uF
R19'
680
1
2
1
2
5
U2
3
5
U3
3
E9 100UF/25V
+VCC
C103 CC102
C103'
CC102
SP1 4 ohm
SP2 4 ohm
SP3 8 ohm
TDA2030A
4
R7 47K
TDA2030A
4
R7' 47K
-VCC
E8' 100UF/25V
C11 224
R21
3.3
R20 22K
C11' 224
R21'
3.3
Title
FC330/370 SUBWOOFER
Number RevisionSize
Legal
Date: 14-Apr-2005 Sheet of File: F:\my file\My Design\tda2030 5-1.ddb Drawn By:
JR1
0.5/0.5W
C4 224
R8
3.3
JR1'
0.5/0.5W
C4' 224
R8'
3.3
JR2
0.5/1W
JR2'
0.5/1W
SYSTEM
D
C
B
A
zoudang
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