3
4
5
1
15
2
13
14
12
+9
+9
+9
+8
+9
+9
+8
+8
+8
+9
R17
10K
4.7K
R9
R11
470R
R7
470K
C6
1uF
C4
1uF
Q2
Q3
C1
C3
C5
C9
C8
C2
C14
C13
C12
C15
C10
C11
0.1uF
0.1uF
0.1uF
0.1uF
R1
R4
390R
150K
2.2M
R2
150K
R3
12K
12K
10K
10K
10K
Q1
1uF
1uF
1uF
VR1
VR2
VR3
Q4
Q5
Q6
Q6
R5
R12
R13
R15
R14
R18
R19
R6
R10
R8
C7
1.5M
150R
2.2K
2.2K
47nF
10nF
47nF
4.7nF
4.7nF
T1
R21
R29
R31
R30
R22
R26
R27
R24
R23
R25
R28
R20
R16
220K
220K
82K
150K
1.5M
1K
22K
47K
47K
47K
2.2K
3.3K
6.8K
6.8K
In
Out
2M2
9Vdc
1N4002
C16
25uF
C17
10uF
R32
820R
D5
D1
D2 D3
D4
A
B
C
D
E
F
G
H
I
K
J
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
V
W
X
Y
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from web sites other than http://www.geofex.com.