Microlab SL-1, SL-2 Schematics
321
4
+VCC
C8
*
C9
100UF/25V
104
Title
1
C8'
104
U2
TDA7265
2
3
6
-VCC
*
C9'
100UF/25V
4
R5
C7
47K
8
2
10
104
R7
4.7
R6
470
R5'
C7'
47K
104
R7'
4.7
R6'
470
5
7
9
11
SL-1/SL-2
Number RevisionSize
A4
Date: 26-Mar-2003 Sheet of
File: F:\huang bf\AN\Sl-1.DDB Drawn By:
C20
4.7UF
C20'
4.7UF
SP1'
8 ohm
SP2'
8 ohm
L.M.An
SP1
4 ohm
SP2
4 ohm
D
C
B
A
C12
47UF
R16
470/0.5W
R16'
470/0.5W
R11
2.2M
R12
100K
R2
3.3K
VR2A
B50K
R3
1.8K
R2'
3.3K
VR2B
R3'
1.8K
50K
C2
104
C3
104
C2'
104
C3'
104
ZD1
15V
ZD2
15V
+VB
-VB
R4
5.6K
R4'
5.6K
+VB
R13
100K
6
5
R14
10K
-VB
C17
100UF/25V
C18
100UF/25V
C4
682
VR3A
B50K
C5
103
C4'
682
VR3B
B50K
C5'
103
C13
104
8
R15
7
43K
U3B
4
4558
C14
104
R17
3.3K
-VCC
LED1
R8
15K
C6
0.22UF
C6'
0.22UF
C10
1UF
D
+VB
RCA1A
VR1A
B50K
C1
VR1B
B50K
R9
6.8K
C11
4.7UF
0.1UF
C1'
0.1UF
2
3
4x1N4004
D3 D2
RCA1B
R18
RCA2A
15K
C
R18'
RCA2B
15K
R9'
6.8K
B
T1
SW1
AC IN
A
1 2 34
R10
2.2M
R1
100K
R1'
100K
D1D4
2
3
6
5
U3A
4558
-VB
U1A
4558
1
U1B
7
D5
1N4148
1
+VCC
C15
4700UF
25V
C16
4700UF
25V
-VCC
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