Page 1
FEDCBA
1
2
3
4
220R
R1
J1
3
4
2
5
1
DIN_ 5P OL
GND
OUT
J2
3
4
2
5
1
DIN_ 5P OL
IN
J3
3
4
2
1
5
DIN_ 5P OL
GND
THRU
CSMUXDAAD
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
+5V_ D
GND
11
AD0
10
AD1
AD2
AD3
AD4
AD5
AD6
AD7
CSDA
13
12
GND
220R
GND
1
11
2
3
4
5
6
7
8
9
74HC574
20
100n_ KER
100n_ KER
DB0
DB1
9
DB2
8
DB3
7
DB4
6
DB5
5
DB6
4
DB7
WR
CS
TLC7524
R6
U2 8
OC
CLK
1D
2D
3D
4D
5D
6D
7D
8D
VCC
C33
C14
U6
220R
R2
D6
220R
R3
220R
R4
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
GND
VCC
I1
I2
VREF
RFB
GND
1
U1 : A
U1 : B
TXD
+5V_ D
74HC14
2
+5V_ D
K
1
2
1N4148
A
PC900V
U8
+5V_ D
12 13
globale Netze
+
1
2
V
+ 12V
19
MAD1
MAD2
18
17
MAD3
16
MAD4
15
14
13
12
10
GND
+ 12V
+ 12V
14
1
2
15
16
3
GND
GND
GND
1
G
2
N
V
D
- 12V
11
10
9
6
8
7
U1 7
7
-
2
+5V_ A
10u
C11
4
74HC14
3
6
4
5
GND
74HC14
U1 : F
+5V_ A
U9 8
A0
A1
A2
INH
4051
GND
VEE
D100
A K
Z6V2
6
TL061
5
1
+
3
GND
1K
+
5
V
_
A
4
74HC14
R8
1
1
1
0
+5V_ D
X0
X1
X2
X3
X4
X5
X6
X7
I/ O
VCC
C13
U1 : C
74HC14
U1 : E
+
5
V
_
D
13
14
15
12
1
5
2
4
+ 12V
3
16
1K
- 12V
100p
65
+5V_ D
R400
10K
R15
U1 : D
74HC14
VCC14GND
100n_ KER
C5
M2
M1
SLIDE
GND
10K
R12
ADRDY
9
AD0
8
AD1
7
AD2
6
AD3
5
AD4
4
AD5
3
AD6
2
AD7
1
+5V_ D
+5V_ D
C2
10u
R7
10K
RXD
89
GND
7
GND
P32
+5V_ D
R2
L2
R1
L1
S3
VAL
GND
CVTUNE
- 12V + 12V
GND
22n
TL064
+
3
1
U18:A
411
-
2
C16
CVDECAY CVENVMOD CVACCENT
- 12V + 12V
22n
TL064
+
3
1
U22:A
411
-
2
C25
R211
+5V_ A
22R
U3 3
20
VCC
VIN+
VIN-
AGND
CS
RD
WR
DGND
9
6
7
8
1
2
3
10
CSRDAD
CSWRAD
19
18
17
16
15
14
13
12
11
VREF/ 2
CLKR
4
CLKIN
5
INTR
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
ADC0804
GND
GND
22p
C31
X1
22p
C32
GND
U5
GND
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ADRDY
VCOOUT
P12
P13
P14
P15
P16
P17
19
31
39
38
37
36
35
34
33
32
40
9
1
2
3
4
5
6
7
8
12MHz
XTAL1
RST
EA
P00/ AD0
P01/ AD1
P02/ AD2
P03/ AD3
P04/ AD4
P05/ AD5
P06/ AD6
P07/ AD7
P10
P11
P12
P13
P14
P15
P16
P17
80C32
VCC
U2 6
C8
XTAL2
ALE
PSEN
P20/ A8
P21/ A9
P22/ A10
P23/ A11
P24/ A12
P25/ A13
P26/ A14
P27/ A15
P30/ RXD
P31/ TXD
P32/ INT0
P33/ INT1
P34/ T0
P35/ T1
P36/ WR
P37/ RD
GND
18
30
29
21
22
23
24
25
26
27
28
10
11
12
13
14
15
16
17
20
ALE
PSEN
A10
A11
A12
A13
A14
A15
RXD
TXD
P32
P33
P34
P35
WR
RD
A8
A9
ALE
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
+5V_ D
R78
1
OC
11
C
2
1D
3
2D
4
3D
5
4D
6
5D
7
6D
8
7D
9
8D
74HC573
VCC20GND
C4
100n_ KER
100n_ KER
GND
P33
S1
8
7
6
5
GND
M2
M1
DELTA
R2
L2
R1
L1
S2
VAL
+5V_ D
GND
1
2
3
4
VAL
GND
CVTUNEOFFSET
7
TL064
GND GND GND
22n
+
5
C18
TL064
GND GND
22n
+
5
C1
U18:B
-
6
22n
C17
7
U22:B
-
6
22n
C24
TL064
+
1
0
TL064
+
1
0
CVCUTOFF
8
U18:C
-
9
8
U22:C
-
9
C12
47u
TL061
U3 2
6
GND
5
+ 12V
7
-
+
1
4
- 12V
GND
K
MAD1
MAD2
1K
D101
R401
2
3
+ 12V
GND
C34
100p
MAD3
Z6V2
MAD4
A
11
10
9
6
8
7
GND
1Q
2Q
3Q
4Q
5Q
6Q
7Q
8Q
10K
91 2 3 4 5 6 7 8
18
B1
17
B2
16
B3
15
B4
14
B5
13
B6
12
B7
11
B8
74HC245
10
GND
A0
A1
A2
INH
4051
GND
VEE
GND
19
18
17
16
15
14
13
12
10
U1 6
GND
U2 7
A0
A1
A2
A3
A4
A5
A6
A7
GND
VCC
22n
C19
22n
C21
X0
X1
X2
X3
X4
X5
X6
X7
I/ O
VCC
DIR
A1
A2
A3
A4
A5
A6
A7
A8
G
+5V_ D
PSEN
ALE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
+5V_ D
CSRDDIP
19
1
2
3
4
5
6
7
8
9
20
TL064
+
1
2
TL064
+
1
2
13
14
15
12
1
5
2
4
3
16
1
VPP
20
E
22
G
10
A0
9
A1
8
A2
7
A3
6
A4
5
A5
4
A6
3
A7
25
A8
24
A9
21
A10
23
A11
2
A12
26
A13
27
A14
27C256
28
+5V
100n_ KER
AD7
AD6
AD5
AD4
AD3
AD2
AD1
AD0
+5V_ D
1
4
U18:D
-
1
3
1
4
U22:D
-
1
3
U9
C7
GND
CVRES
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
GND
11
12
13
15
16
17
18
19
14
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
10KLIN
L
VR1
10KLIN
L
VR2
10KLIN
L
VR3
10KLIN
R
10KLIN
L
VR5
10KLIN
L
VR6
GND
+ 12V
M1
M
M
M
VR4
M
M
M
+5V_ D
P17
P12
P13
P14
P16
P15
SUPPLY
GND
C10
R
CUTOFF
R
ENVMOD
R
ACCENT
L
DECAY
R
RESONANCE
R
DIST
10K
R17
10K
R28
1
16
14
11
9
7
5
3
4K7
R402
10u
9
8
A14
7
A13
6
A12
5
A11
4
A10
3
2
1
+5V_ D
9
AD0
8
AD1
7
AD2
6
AD3
5
AD4
4
AD5
3
AD6
2
AD7
1
+5V_ D
M
VCC
GND
VO
4504
I6
A6
I5
A5
I4
A4
I3
A3
I2
A2
I1
A1
U1 3
Q100
BC547C
220R
R13
CVRES
U4 : A
2
A0
A1
A9
A8
RD
A
3
B
1
G
74HC139
16
VCC
GND
4
5
6
7
8
CSRDDIP
CSRDAD
Y0
Y1
Y2
Y3
100n_ KER
1
+5V_ D
C3
GND
U4 : B
14
A0
A1
WR CSDA
13
15
A
B
G
Y0
Y1
Y2
Y3
12
11
CSWRAD
10
CSMUXDAAD
9
74HC139
+5V_ D
GND
13
8
15
TUNEPOT
12
10
SLIDE
6
GATE
4
ACC
2
DCOREF
C
B
E
+5V_ D
D2
2
MFAR
1K
R182
GND
CVVZ
M3 VCA
10u
C9
CVVZ
CV_ VZ
CV_ RES
I_ ENV_ VCA
VCF_ OUT
ACCENT_ OUT
3
M4 vcfmod
GND
2K2
R125
1u
CVCUTOFF
CVACCENT
CVDECAY
CVENVMOD
ACC
GATE
C20
CVTUNE
CVTUNEOFFSET
SLIDE
CV_ CUTOFF ACCENT_ OUT
CV_ RES
CV_ ACCENT
CV_ DECAYTIME
CV_ ENVMOD
CTRL_ ACCENT
CTRL_ GATE
I_ ENV_ VCA
CUTOFF_ MOD
UVCFR
ENV_ OUT
M5 vcf
CV_ RES VCO_ OUT
M2
CV_TUNE_MASTER
CV_TUNE_OFFSET
CTRL_ SLIDE
UVCFR
CUTOFF_ MOD
VCF_ OUT
VCO
VCO_ OUT
GND
VCOOUT
DCOREF
TUNEPOT
SQUARE_ OUT
DCO_ REF
CTRL_ TUNE_ POT
ENV_ OUT
4
Tit le
Size
C
Date
Filenam e Sheet of
MB33II
Drawn by
1
Re vNum ber
6
AB C D E F
Page 2
R15
V1
S1
J1
J3
J2
C72
C71
C69
C70
D17
C24C21C25
C73
C1
D18
C76
D170
C200
C14
U96
C7
C11
R2
R4
R1
R8
R3
R17
U8
R6
D6
U1
C5
X1
C3
C31
C32
U6
U4
U16
R183
R182
R78
U9
U5
U26
U28
U13
C4
D2D1
Q100
C8
R402
C2
R7
C33
D100
U17
R28
U98
R400
R211
C19
C16
U22
U18
C18
R401
D101
C17
R159
R158
R164
R165
R163
R160
R125
TP16
C54
U32
U76
U27
U33
C34
R12
C13
C12
S2 S4
S3
U86
R218
R166
U72
R10R184
R177
Q31
R161
R169
R162
R167
R189
R179
U75
C55
C56
R5
R174
R173
R181
U80
C59
C60
R188
R11
R9
TP18
R180
R172
U91
X2
VR8 VR10
C80
C58
C57
C61
R13
Q15
C65C43
R76
C67
R197
R75
Q32
U94 U95
TP19
C35
C81
R81
Q18
C45
Q14
C37
Q2
Q16
C41
R195
R194
R82
Q19
TP3
R67
R47
R66
R64
R49
R48
R55
C36
R83
R71
Q26
C29
R70
R60
C38
R74
R79
C40
R44
R52
R62
R57
C63
R65
Q27
Q17
Q13
R24
C75
R21
C39
Q1
TP4
TP5
R18
R22
R53
R58
R54
R19
C30
J5
R20
R23
C79
U34
U35
R16
C28
R217
TP13
R153
R143
R149
R157
R146
R89
TP6
VR9 VR1 VR5 VR2 VR3 VR4 VR6 VR7
TP2
R216
TP15
R25
R500
C20
R155
C6
C66
Q5
C68
R126
R121
R94
R106
R105
R115
R102
R63
R104
R148
R131
Q29
TP20
R137
D13
C49
U70
U52U55
R198
R196
R193
R127
R128
R134
R130
R124
R123
R140
TP1
R91
R14
R93
R98
R95
R97
R90
C64
Q4
C44
C78
C53
TP12
R201
R202
R142
R154
R147
R152
R156
R113
R112
R120
R117
TP8
R118
R109
U97
TP21
C9
U67
C50
U57 U59
R199
R135
R141
R133
R150
R144
R145
R107
R110
R111
R108
R116
R119
R103
R203
TP10
C77
Q3
D12
R200
Q23
D3
C52
C51
R73
R61
R59
R151
Q33
U43
U54
U61
D15
R99
R96
R84
R86
R101
R100
R92
R132
R139
U49
R46
Q25
C47
C48
TP7
R40
R51
R192
R136
D14
Q22
R35
R68
R129
U41
U39
U3
U40
R30
R26
R27
R33
C42
R29
R69
R72
R36
R56
R32
C46
R38
D8
R39
R122
Q28
Q10
D10
R87
R114
Q11
C10
R80
R31
R34
R42
Q9
R77
C74
R45
R43
R37
C27
R41
R50
J4
C23
Q30
C22
D7
R88
R85
Page 3
DCBA
CTRL_ TUNE_ POT
CV_TUNE_MASTER
1
CV_TUNE_OFFSET
2
CTRL_ SLIDE
ENV_ OUT
R158
47K
R164
1M
GND
2
3
10KLIN
Tune- Abgleich
R159
33K
-
+
R
M
VR9
L
4
1
1
GND
R
U72:A
1
TL064
- 12V + 12V
R
47K
25K
TP1 6
M
50K
M
10K
L
TP1 8
R172
15
68K
R163
R165
68K
PWM- Abgleich
L
GND
+ 12V
4053
U76:B
OUT
6
5
CONT
-
+
IN0
IN1
10
2
1
U72:B
7
TL064
GND
22R
R218
4K7
R160
4
8
6
7
4053
U76:C
OUT
GND
EN
VEE
+5V_ A
10KLIN
L
VR8
CONT
IN0
IN1
VCC
M
9
5
3
16
+ 12V
R
GND
R166
Tune
47K
10
+
9
-
13
IN1
12
IN0
11
CONT
+5V_ A
GND
U76:A
4053
OUT
TL064
8
U72:C
14
1u
C54
GND
33K
R167
+ 12V
10K
33K
10K
R161
R169
GND
13
12
R162
-
+
GND
3
U72:D
14
TL064
C55
100n
U8 0
VCC
RESET
TRIG
OUT
THR
CONT
DIS
GND
ICM7555
GND
B
Q31
+ 12V
8
4
2
6
5
7
1
E
C
BC557C
68n
C56
C57
100n
1
2
10u
GND
R9
10K
R173
J5
VAL
47K
X2
STIFT4
C2
C3
C1
U75:C
C4
C5
8
TL064
GND
R177
1
2
3
4
GND
R181
2K2
9
-
R184
10K
R188
10K
R10
R
M
10KLIN
GND
VR1 0
L
4K7
10
+
M2
10K
R11
M1
R2
L2
R1
L1
12
11
9
6
5
4
3
7
GND
TL064
U75:B
U8 6
Q1
Q2
Q3
Q4
Q5
Q6
Q7
4024
GND
7
RESET
CLK
VCC
2
1
14
GND
+
-
10K
R180
C60
5
6
R179
470p
R189
10K
LM393
7
U91:B
1
U91:A
LM393
15K
GND
5
+
6
-
1
4
8
GND
3
+
2
-
+ 12V
Title
Siz e
GND
1
1
4
MB33II VCO
GND
3
- 12V+ 12V
3
+
TL064
2
-
U75:A
4
RevNum be r
GND
SQUARE_ OUT
3
DCO_ REF
10K
R174
C59
U75:D
TL064
10K
14
R5
-
C58
12
+
10u
13
4
10u
C61
B
VCO_ OUT
S4
GND
A
BC
VAL
Da t e
Filena me
D
Drawn by
ofSheet
75
Page 4
DCBA
R19
RES AbgleichRES Extern
6
-
5
+
GND
CUTOFF_ MOD
UVCFR
L
10n
C28
10n
C79
TP4
50K
M
U34:B
TL062
7
R
GND
100K
R217
220K
R16
2
3
100R
-
+
R18
2K2
R
L
M
TP5
8
4
R20
470R
R21
470R
10K
R23
Title
Siz e
+ 12V- 12V
BC557C
U34:A
1
TL062
GND
E
B
Q1
C
+ 12V
1
1
2
4
3
6
1
LM13700
5
7
U35:A
- 12V
R24
22K
GND
MB33II VCF
8
VCF_ OUT
R22
10K
- 12V
1
2
3
4
RevNum be r
22K
1
CV_ RES
R216
25K
L
R
100R
R500
TP2
M
C30
1u
R58
100K
4
+5V_ A
1u
GND
R54
C39
100K
+ 12V
M
3K3
L
TP3
100K
5K
R
R60
47u
R52
10K
BC557C
100R
C29
C75
1u
GND
1
4
1
3
R44
GND
12
R65
Q14:E
+ 12V
C
Q17
GND
E
C40
10K
R71
BC557C
E
CA3046
B
Q26
C
2K2
+ 12V
3
R53
2K2
B
BC549C
1u
Cutoff
OFFSET
2K2
1
R83
UVCFR
CA3046
1
1
R47
10K
1
0
10u
C80
C
2
GND
E
C
E
VCO_ OUT
8
3
+5V_ A
R75
7
2K2
2K2
R76
Q14:A
2
CA3046
10u
C45
4
Q2:C
9
33n
C81
Q15
B
BC549C
BC549C
33n
C37
Q18
B
BC549C
BC549C
33n
C41
Q14:C
6
CA3046
CA3046
3n3
15n
C43
1
3
GND
6
Q14:D
C65
Q2:D
CA3046
Q16
B
Q19
B
9
5
Q14:B
3
8
7
C
E
C
E
1
1
1
0
4
CA3046
2K2
R82
100n
GND
R81
22K
Q2:B
C36
4
12
2K2
R48
R57
R64
R66
100K
10K
10K
R49
CA3046
1
5
Q2:A
CA3046
3
3
CA3046
Q2:E
1
4
1
3
+5V_ A
10K
22K
BC549C
B
100n
2
R55
100K
2K2
R67
10K
R70
R79
Q13
C35
+5V_ A
10K
R74
B
Q27
GND
C
GND
E
10K
C38
1u
R62
E
C
GND
B
Da t e
Filena me
A
BC
D
Drawn by
2
ofSheet
6
Page 5
FEDCBA
1
2
3
4
ENV_ OUT
CV_ CUTOFF
CV_ ENVMOD
CV_ DECAYTIME
CTRL_ ACCENT
+5V_ A
10
GND
CV_ ACCENT
UVCFR
CV_ RES
ACCENT_ OUT
+ 12V
1
IN1
2
IN0
CONT
R26
R29
GND
16
VCC
3
IN1
5
IN0
9
CONT
U43:B
4053
1K
1N4148
10K
U43:C
4053
OUT
D10
VEE
EN
GND
OUT
GND
15
10K
R100
4K7
+ 12V
R89
1u
R192
10K
+ 12V- 12V
2
13
-
KA
12
+
U39:D
14
LM324
ENVMAX
3
4
-
+
1
1
U39:A
1
LM324
B
Q22
E
C
BC557C
C6
GND
47K
R25
R41
22R
10u
C27
R43
BC557C
10K
B
Q11
E
C
GND
C42
100n
R27
100K
GND
R45
10K
R50
10K
+ 12V
D7
A K
1N4148
BC547C
Q10
B
C
E
R31
22K
R37
100R
+ 12V
R34
1M5
1u
BC557C
B
Q9
C22
1
E
C
GND
GND
7
-
5
U4 0
6
CA3080
+
4
GND
R59
- 12V
470R
R61
7
6
8
4
4K7
GND
R73
- 12V
9
100K
10
R84
100K
GND
R92
6K8
Decay m ax
13
IN1
12
11
GND
IN0
CONT
2
3
U43:A
4053
-
+
OUT
4
1
1
14
U54:A
LM324
2
3
-
+
100K
+ 12V
1
- 12V
R40
R86
+ 12V
1K
TP7
L
100K
R96
B
Q25
R51
M
10K
U54:C
8
LM324
R99
GND
E
C
R39
100K
GND
R
B
Q23
220R
BC557C
220R
E
C
+5V_ A
CA3080
GND
+ 12V
BC557C
- 12V
3
+
2
-
+ 12V
100K
R33
100K
R36
100K
R69
R32
R56
GND
GND
220R
2
-
3
+
220R
- 12V
9
10
7
4
-
+
5
U4 1
6
CA3080
100K
R72
U39:C
LM324
R
47K
R35
6
-
5
+
U39:B
7
LM324
47K
R136
R46
68K
100K
CUTOFF WIDTH
R63
M
TP6
L
CUTOFF_ MOD
100K
R77
+ 12V
10K
GND
R68
47K
R80
CTRL_ GATE
8
R88
R85
22K
10K
GND
BC547C
47n
Q30
B
BC557C
10K
C74
C
E
GND
R30
B
Q28
R87
22R
E
C
22K
GND
R38
22K
D8
C23
100n
R42
100R
GND
K
2
1N4148
A
I_ ENV_ VCA
GND
C44
R91
- 12V
4
+
-
7
+ 12V
GND
CA3080
5
6
U5 2
GND
12
13
+
-
LM324
14
U55:D
3
10K
R102
R104
22K
GND
R115
47K
GND
GND
4
47K
5
+
6
-
LM324
7
U54:B
A K
1N4148
6
5
U4 9
7
R101
D3
10u
+ 12V- 12V
R95
R97
2
3K3
3
3K3
100K
R98
4
-
+
1
1
U55:A
LM324
GND
1
R90
100K
220R
100K
R93
6
-
5
+
U55:B
7
LM324
R14
100K
3
2
U_ ACCENT
GND
12
13
+
-
LM324
14
U54:D
10K
R106
R103
6K8
47K
R105
GND
47K
R94
4
Tit le
MB33II
Re vNum ber
10
B
Q29
E
C
BC557C
Size
C
9
-
+
U55:C
8
LM324
GND
Date
Filenam e Sheet of
Drawn by
66
AB C D E F
Page 6
1
2
3
4
I_ ENV_ VCA
R
GND
CV_ RES
ACCENT_ OUT
VCF_ OUT
GND
25K
CV_ VZ
R110
TP8
M
1K
L
47K
R121
+ 12V
10K
R140
GND
GND
4K7
- 12V
C49
2
3
A
10K
R108
R111
13
12
R131
100n
-
+
TP1
L
25K
100K
R117
-
+
68K
D13
A K
1N4148
6K8
R137
220K
R148
4
1
1
D12
A K
1N4148
M
R
U59:D
14
LM324
GND
U70:A
1
TL064
- 12V + 12V
10K
6
5
R126
-
+
10K
R112
22K
R120
GND
U70:B
7
TL064
L
TP1 3
100R
R
GND
10K
R113
9
-
10
+
BC557C
B
Q5
R143
4K7
220R
R149
M
220R
R153
R155
10K
E
C
GND
R109
220R
U59:C
LM324
15
13
14
DCBA
J4
VAL
R
L
C2
C3
C1
C4
C5
R133
100R
GND
D
1N4148
K A
D14
D15
A K
1N4148
R139
4K7
7
2
-
3
+
4
Drawn by
GND
R132
1
R114
1K
+ 12V- 12V
U6 1
6
5
TL061
3vc a. s01
ofSheet
22K
GND
RevNum be r
6
1
2
3
4
4K7
- 12V
R107
6
5
OUTPUT
-
+
U59:B
7
LM324
BC557C
E
B
Q3
C
100p
C46
47KLOG
L
VR7
R
M
+ 12V
7
+ 12V
2
GND
-
3
+
4
5
U5 7
6
CA3080
2
3
4
-
+
1
1
U59:A
1
LM324
1M5
- 12V
10K
R118
8
R116
R119
10K
GND
R123
10K
R124
10K
+ 12V
GND
+ 12V
GND
7
2
-
3
+
4
1
U3
5
TL061
6
1K
R122
- 12V
3K3
R128
100K
13
12
-
+
BC557C
U70:D
14
TL064
B
Q4
GND
1
1
2
4
3
7
6
1
U67:A
8
LM13700
5
R145
10K
R144
C51
10u
E
C
C48
10K
- 12V
10u
C52
10K
R129
10u
C47
U67:B
10u
9
10K
R150
GND
1
6
1
2
R135
LM13700
1
0
R151
10K
+ 12V
10K
15
13
14
Title
GND
220R
R141
220R
M
TP1 0
MB3 3II VCA+ Dist o rt io n
Siz e
10K
R156
GND
Da t e
B
1.2.98
Filena me
+5V_ A
1
0
50K
R130
10K
- 12V
1
6
U35:B
9
LM13700
1
2
L
TP1 5
M
R
15K
R157
R127
10
9
10K
-
+
R134
U70:C
8
TL064
GND
R142
+ 12V
GND
R146
10K
47u
4K7
220R
R147
L
TP1 2
100R
R
M
220R
C50
- 12V
47u
C53
R152
R154
3K3
GND
BC
Page 7
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