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+
-
9 VDC
Battery
Output
Input
Foot
Switch
(A)
Foot
Switch
(C)
2
1
3
7
8
9
4.7K
2N5088
Q1
C
B
E
.1µ
250KA
2M
1
N
4
1
4
8
1
N
4
1
4
8
250KA
.1µ
OUTPUT
DISTORTION
+
-
820
Foot
Switch
(B)
5
4
6
3PDT Foot Switch
1
2
3
4
5
6
7
8
9
Switching function of the 3PDT switch. The solid line
illustrates an internal connection between terminals.
1
2
3
4
5
6
7
8
9
1
N
3
4
A
1
N
3
4
A
3 Position
On-Off-On
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“Thunderdrive Deluxe LTD”
Schematic
Base
Emitter
Collector
2N5088
NPN BJT
B
C
E