1
1
2
2
3
3
4
4
D D
C C
B B
A A
Title
Number RevisionSize
A4
Date: 2012/7/29 Sheet of
File: β β.SchDoc Drawn By:
8
1
4
3
2 1
U1A
NE5532P
8
1
4
3
2
1
U3A
NE5532P
VCC
VCC
8
1
4
3
2
1
U2A
NE5532P
VCC
VSS
VSS
VSS
R11
1k
R12
33k
R2
1k
R3
33k
R5
10k
R8
10k
R7
10k
GND
1
2
3
4
P2
Header 4
C3
10uf
C
3
B2 E
1
Q2
2N2222
R1
1k
R13
1k
R9
600
VCC
VSS
D1
Diode
R4
820
D2
Diode
R10
820
C5
0.1U
C4
10U
GNDGND
C1