Microlab M-300II, M-400II Schematics
4321
+VCC
R5
510
R5'
510
LED1
C5
3.3UF
C5'
3.3UF
R14
510
C22
100UF/25V
C12
22UF
5
1
C21
104
Title
C23
104
2
1
2
1
2
U2
U3
+VCC
U4
-VCC
TDA2030
4
3
5
TDA2030
4
3
C22'
100UF/25V
TDA2030
5
4
3
-VCC
R15
22K
R6
22K
R6'
22K
JR1
0.5
C6
CC224
R7
2.2
JR1'
0.5
C6'
CC224
R7'
2.2
C13
CC224
R16
2.2
M300II
Number RevisionSize
A4
Date: 9-Mar-2005 Sheet of
File: F:\my file\My Design\TMD-1.ddb Drawn By:
C09
CC102
C08
CC102
C08'
CC102
SP1
6 ohm
SP2
6 ohm
SP3
4 ohm
L.M.An
D
C
B
A
C2
R11
10K
C04
C03
472
R2
8.2K
C2'
472
R2'
8.2K
4xRL205
D4
C3
U1D
LM324U1C
C14
3300UF
25V
C14'
3300UF
25V
0.22UF
C3'
0.22UF
C10
0.47UF
R17
560
R17'
560
+VB
R4
6.8K
R4'
6.8K
R13
10K
C15
100UF
C15'
100UF
C4
102
C4'
102
C11
102
R19
3.3K
R3
3.3K
R3'
3.3K
C8
224
C01
CC223
C02
CC223
6
5 7
C9
104
+VCC
-VCC -VB
R12
10K
D1
D2D3
JK1
C07
CC221
VR2
B50K
SW1
VR1A
B50K
C1
0.22UF
VR1B
B50K
C1'
0.22UF
R8
4.7K
R8'
4.7K
F1
T250mAL250V
R9
8.2K
D
C07'
CC221
C
B
AC IN
A
1 2 3 4
R1
47K
R1'
47K
13
12
T1
U1A
LM324
14
2
3
9
10
+VB
-VB
LM324
4
11
1
U1B
R10
12K
LM324
8
CC223
CC223
C05
C06
CC223
CC223
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com
4321
+VCC
R5
510
R5'
510
LED1
C5
3.3UF
C5'
3.3UF
R14
510
C22
100UF/25V
C12
22UF
5
1
C21
104
Title
C23
104
2
1
2
1
2
U2
U3
+VCC
U4
-VCC
TDA2030
4
3
5
TDA2030
4
3
C22'
100UF/25V
TDA2030
5
4
3
-VCC
R15
22K
R6
22K
R6'
22K
JR1
0.5
C6
CC224
R7
2.2
JR1'
0.5
C6'
CC224
R7'
2.2
C13
CC224
R16
2.2
M400II
Number RevisionSize
A4
Date: 9-Mar-2005 Sheet of
File: F:\my file\My Design\TMD-1.ddb Drawn By:
C09
CC102
C08
CC102
C08'
CC102
SP1
6 ohm
SP2
6 ohm
SP3
4 ohm
L.M.An
D
C
B
A
C2
R11
10K
C04
C03
472
R2
8.2K
C2'
472
R2'
8.2K
4xRL205
D4
C3
U1D
LM324U1C
C14
3300UF
25V
C14'
3300UF
25V
0.22UF
C3'
0.22UF
C10
0.47UF
R17
560
R17'
560
+VB
R4
6.8K
R4'
6.8K
R13
10K
C15
100UF
C15'
100UF
C4
102
C4'
102
C11
102
R19
3.3K
R3
3.3K
R3'
3.3K
C8
224
C01
CC223
C02
CC223
6
5 7
C9
104
+VCC
-VCC -VB
R12
10K
D1
D2D3
JK1
C07
CC221
VR2
B50K
SW1
VR1A
B50K
C1
0.22UF
VR1B
B50K
C1'
0.22UF
R8
4.7K
R8'
4.7K
F1
T250mAL250V
R9
8.2K
D
C07'
CC221
C
B
AC IN
A
1 2 3 4
R1
47K
R1'
47K
13
12
T1
U1A
LM324
14
2
3
9
10
+VB
-VB
LM324
4
11
1
U1B
R10
12K
LM324
8
CC223
CC223
C05
C06
CC223
CC223
PDF created with FinePrint pdfFactory trial version http://www.fineprint.com
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