Microlab A-370 Schematics

1

2

3

4

+VB

C12

+VCC

C1

E8

U1A

MC472

E2

104

100UF/25V

R3

2

4558

0.22UF

5 TDA2030A

SP1

3.3K

1

JK1

R

1

JR1

4 ohm

D

3

R2

C102

U2

4

D

R4

CC221

2

0.5/0.5W

E1

R1

8.2K

C2

R5

C3

3

R7

6.8K

E3

C4

C101 1UF

MC472

22K

CC102

C103

100K -VB

2.2UF

47K

224

221

CC102

R IN

VR1A

R6

R8

B50K

C1'

3.3

680

R OUT

MC472

U1B

E2'

R3'

6

0.22UF

5 TDA2030A

SP2

3.3K

1

L

7

C102'CC221

JR1'

4 ohm

L IN

VR1B

5

R2'

2

U3

4

E1'

R1'

8.2K

R4'

C2'

R5'

C3'

0.5/0.5W

C103'

B50K

C101'

6.8K

MC472

E3'

3

R7'

C4'

1UF

100K

22K

CC102

L OUT

221

2.2UF

47K

224

CC102

R6'

R8'

680

3.3

C

-VCC

C

E8'

C12'

100UF/25V

R9

104

4.7K

+VCC

R9'

+VB C6

C13

E9

4.7K

C8

E6

TDA2030A

104

100UF/25V

R11

MC224

R15

1

5

JR2

104

2.2K

U5

4

10K

E5

0.47UF

R16

2

0.5/1W

2

8

0.47UF

3

6

R12

22K

R13

R14

C10

22K

R18

C11

10K

10K

3

1

102

22K

224

E4

5

7

U2A

R21

SP3

1UF

4 U2B

4558

E7

3.3

8 ohm

C9

VR2

22uF

B

R10

B50K

B

MC104

R20

100K

C7

22K

104

R19

-VB

TDA2030A

680

+VCC

R24

LED1

1

5

4

JR2'

U6

2.7K

R17

2

0.5/1W

LED

3

R18'

C11'

R22

+VB

22K

4xR205

470/0.25W

22K

224

F1

R21'

SW1

130C

C104

D4

D1

E12

ZD1

E10

C7'

T1

223

3.3

4700UF

9.1V

100UF/25V

22uF

AC IN

25V

-VCC

C13'

E9'

C104'

104

100UF/25V

R19'

223

E13

ZD2

D3

D2

4700UF

9.1V

E11

680

25V

100UF/25V

A

R23

Title

A

-VCC

-VB

470/0.25W

FC370 SUBWOOFER

SYSTEM

Size

Number

Revision

Legal

zoudang

Date:

14-Apr-2005

Sheet

of

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F:\my file\My Design\tda2030 5-1.ddb

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