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1

2

3

4

5

6

F

F

R105
XON

1K5

V-

11 JP1 10 7 8 9

low-curr. LED/Green 250KB DISTORTION 50KB TONE 50KA LEVEL

R12 10K
PON E V+

D4 D2 D6 4148

4 5 6 1 2 3

D5

E

INPUT J1

2

3 2 1

R1 33K

Q1 BC264D
3

C11 0.68 C1 R11 3K3 Q5
3 2

REDLED D3 REDLED C12 1N5
VV+ 3 2 4 5 1

3POT 4148 4148 R14
POT-PCB

J8004

1

C13 2N2

390K C15 330P R13 3K3 C14
7 8

0.22 R4 330K D1

K222E
1

U1A

V+ 9

R2 1M
D VV-

R3 3K3
VXON

4148

C10 33N

C21
V+ 2

4558S

68N

6

V-

U1B 4558S

4N7 R20 15K C22 150N C20 68N R21 68K

Q2
3

D

R107 1M C103 47N
V-

1

R5 330K

R10 22K

K222E C23 1 R22 10K
V-

C24 1

V+

C30
3

2

V-

R34 330K K30A-Y

Q7
3

2

D8 4148

R109 1M C105 47N
V-

Q3 K222E
1

XON

33N
C

R30 200K

K30A-Y C31 1 R31 10K D7
3 2 1

1

C

Q6 2 R32 330K R108 1M C104 47N

1

BYPASS

4148

3 1

2

XOFF

R33 330K

C40 1

V+

Q4

J3

3 2 1 3

D101 4148

C1571G R41 2K2

3

OUTPUT J2

C41
2

Vs

VV-

R102 100K
3

V-

SW101A
2

U101
1A 1SP 1DP 1DN 1SN VDD 2DP 2A 2DN VSS 10 3A 3SP 3Y 3SN 2 1 5 4 14 13 8 7 11 12 9 V-

R110 2K2
XOFF

R40 200K

3.3

R42 200K

1

J8004
VVVB V+ Vs

J8004
1 B 6

SW2204
5

R103 100K J4
XON

Power
5 4 1

4

SW101B SW2204

6

R203 R201 18k C201 220 R202 18k C202 220 100 C203 47

R101 470K

J7001 R104 1M C102 10N
PON V-

D201 B1
1 2

C101 1N
VA V-

14007

4001

SNAP
VVVVV-

12%(/6(/(&7521,&6
Barnerstrasse 42, 22765 Hamburg, Germany
http://wwww.nobels.com - email: [email protected]
Title Number: Date: A

CIRCUIT DIAGRAM

DISTORTION / DT-1
4-Feb-2000
Time:

Size: A4 Sheet 1
6

Rev: 4 of

All rights reserved - Copyright NOBELS Electronics All unspecified capacitors in uF, resistors carbon 5%
1 2 3 4 5

16:58:29

1

File:

R:\$PRO\PEDS\DSGN\DT-1\DT1R4.SCH