Microlab A-370 Schematics

4321

+VB

U1A
4558

2

3

R1
100K

6

5

R1'
100K

C8
MC224

R14
10K

+VCC

E12
4700UF
25V

E13
4700UF
25V

-VCC -VB

-VB

U1B

2

3 1

U2A
4558

C9
MC104

R24

2.7K
R22

470/0.25W

R23
470/0.25W

1

7

R OUT

L OUT

R9

4.7K

R9'

4.7K

E4

1UF

R11
10K

JK1

+VB

6

5

R10
100K

-VB

T1

D

R IN

L IN

C

B

AC IN

A

SW1

VR1A
B50K

VR1B
B50K

F1
130C

1 2 3 4

C104'

223

R

E1
1UF

C101
221

L

E1'

C101'

1UF

221

C6

104

R12

8

7

U2B

4

C104

223

R13

22K

10K

C7
104

4xR205

D4

D1

D2

D3

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

FC370 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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