Keithley 6430

Source-Measure Concepts 5-17
Current Limit
Load Line
Operating
Point
Voltage Source
Load Line
V-Source (V
S
)
I-Meter
(I
M
)
5mA
10mA
10V
2kΩ
DUT Load Line (R)
I
M
= V
S
/ R
V
S
= I
M
• R
= 10V/2kΩ
= 5mA
A) Normal V-source operation
Current Limit
Load Line
Operating
Point
Voltage Source
Load Line
I-Meter
(I
M
)
10mA
100V
= (10mA) (800Ω)
= 8V
B) V-Source in compliance
80V
800
Ω
DUT Load Line (R)
V-Source (V
S
)
Figure 5-8
V-Source operating
examples