Keithley 617 - Page 116

r-
VOUT = “IN
>
0 VOUT
>
\. VOLTS
-._.-.-.
ti
>
IIN -
I
I
0 VOUT
>
VOUT = -II,, RF
RF
I
“OUT =“X “R
RF
i. OHMS
CF = 1OOOpF
I \
- QIN
VOUT = -
CF
>
QIN -
“OUT
>
). COULOMBS
Figure 6-3. Electrometer Preamplifier Configuration