Microlab X1 Schematics

4321

+VB

INPUT1

D

INPUT2

R

R10'

15K

L

R10
15K

C

B

SW1

AC IN

A

R

U1A
4558

100K

R1
100K

R13 33K

1

6
5

R1'

-VB

2
3

C25

3300UF/25V

C26

3300UF/25V

R14
10K

U1B

R9'

4.7K

7

1

+VCC

-VCC

VR1A
B50K

R01 1K

W100K

L

VR1B

B50K

C9
1UF

T1

1 2 3 4

VR4

R01' 1K

R11 8.2K

R12

100K

C1'

1UF

C1
1UF

+VB

8

2
3

U4A

4

4558

-VB

1N4002/IN4004

D1

D2

1N4002/IN4004

D3 1N4002/IN4004

D4

1N4002/IN4004

R15
10K

C23
104

C21

R9

4.7K

C13
224

330/0.5W

104

C2'
682

R2'

8.2K

682

C2

R21

330/0.5W

R22

R2

8.2K

5

U3

3

R7' 33K

5

U2

3

100UF/25V

+VCC

Number RevisionSize

+VCC

TDA2030A

4

4

R7 33K

-VCC

C8'

5

1

U5

2

3

-VCC

R19
39K

C22

4

100UF/25V

E008C24

224

R8'

3.3

224

R8

3.3

C6'

C6

0.5/1W
JR1

0.5/1W

C19
224

R20

3.3

JR2

FR SPEAK

6 ohm

FL SPEAK

6 ohm

BASSSPEAK

6 ohm

D

C

B

A

C7
104

R3'

3.3K

C16

C3

333

C3'

333

0.22UF
C4'

C4

0.22UF

R17

22K

C11
104

C12
104

+VB

R23

2.7K

-VB

R5
24K

R5'
24K

R18
560

LED1

VR3A

R4'

6.8K

B50K

R3

3.3K

VR3B

C15

0.47UF

VR2
B10K

B50K

0.47UF

C27
100UF/16V

C28
100UF/16V

R4

6.8K

6
5

C14
104

U4B

ZD1

9.1V

ZD2

9.1V

7

2.2UF

R6'
510

TDA2030A

2.2UF
C5

R6
510

C8
100UF/25V

1
2

C5'

1
2

C7'
104

TDA2030A

22UF

C18

Title

X1

A4

Date: 5-Apr-2004 Sheet of
File: F:\my file\WANG\X1-21 2030.ddb Drawn By:

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