2
TL084P
R6
R8
10K
100K
S R4
10K
GND
R2
R13
13
TL084P
OUT
14
1 2
12
R11
IC1D
10K GND
GND
GND GND
GND 4
IC1B
1u
R7 100K
7
R9
TL084P
5
C4
10K 3M3
51K
R12
+
R10 +
IC1C
1K
1u
1K
R1
8 10
R3 6
TL084P
C5
10K 9
VCC 1 2 3
GND
11
GND
51K
GND
S2
E
OFFSET 10K
S1
1
A
IC1A
3