3
ZENDRIVE / AZIMUTH OVERDRIVE
Schematic
GND
+9
V
7 k 4
2
M
2
5M
M
1N4002
100u
F
500k
B
100kB
G
N
D
G
N
D
10
k
10k
47u
F
V
R
G
N
D
G
N
D
A
D71
2
A
D71
2
GND
470n
470k
V
R
2N700
0
2N700
0
B
AT
41
1N34
a
B
AT
41
100p
F
50
kB
1k
1k
10kB
100
n
V
R
10
k
3n
3
470n
1k
GND
GND
+9
V
SW
IN
OUT
R
D
E L
D
P
R
LED
D1
C
6
DRIVE
1
2
3
VOLUME
1
2
3
R
6
R7
C
7
IC1
A
2
3
1
6
5
7
IC1
B
8
4
C1
R1
Q
1
Q
2
D
2
D
3
D
4
C
2
TO
N
E
1
2
3
R
2
R3
VOICE
1
2
3
C
3
R
4
C
4
C5
R
5