Fluke PM2811 User Manual page 67

Using your Programmable Power Supply
Example for a variable load resistance:
+
power
OVP
output
-
Required: The V
output channel.
• I = 1A Programmed current becomes 1A.
Set
• V = 8V Programmed voltage becomes 8V.
set
The crossover point resistance R
• If R increases from 8 to 1
load
into the CV mode (refer to figure 5.5.7). This means that V
I becomes 8V/16 = 0.5A.
load
• If R decreases from 8 to
load
into the CC mode (refer to figure 5.5.7). This means that I
becomes 1A x 4 = 4V.
Example for a fixed load resistance:
+
power
OVP
output
-
Required: - Fixed load resistance R
- Overcurrent protection disabled (OCP DIS).
- The V
V
set
load
set
I
set
and I parameter have been coupled for the selected
set set
, then R
, then R
V
set
load
set
I
set
and I parameter have not been coupled.
set set
+
V = Voltage programmed
set
I = Current programmed
set
R = 2 to 20
load
-
= V / I = 8 .
c set set
> R , so the output channel goes
load c
< R , so the output channel goes
load c
+
V = Voltage programmed
set
OVP = OverVoltage programmed
set
I = Current programmed
set
-
= 10 .
load
5 - 15
(variable)
= 8V and
load
= 1A and V
load load