EAI 580 Reference Handbook page 109

APPENDIX 1
SIMPLE CIRCUITS USING AMPLIFIERS AND POTENTIOMETERS
CIRCUIT DESCRIPTION
I.
GROUNDED POTENTIOMETER
2. UNGROUNDED POTENTIOMETER
3. INVERTER
4.
MULTIPLICATION BY
-10
5.
MULTIPLICATION BY -
k
for I
~
k
~
10
(for k
<
I use circuit I feeding
circuit 3 )
6. MULTIPLICATION BY 2
7. MULTIPLICATION BY
~
CIRCUIT
e~l
~rke
t-
=
k'
POTENTIOMETER
SETTING
lOOK
100 K
i:""l
e~-e
lOOK
10K
r:-l
e~-Ioe
lOOK
.,,"
e
> 10K
>--...... -
-ke
> """
-::.:=~
SETTING
=
l
10
lOOK
.AAA
el6J-
.OOK
e
A A A
"
..
lOOK
-2e
lOOK
A
PROGRAMMING SYMBOL
k
e - 0 - - k e
~ e~i
e
2
+k(e
l
-e
2
)
Lo
e
2
e--{>--e
e+-Ioe
k
~
e~-ke
e~-2e
OR
e~-2e
Al-l