138
PLZ-4WH
A
Operating Area
As shown in the figure, the PLZ-4WH can be used within the area enclosed by L
1
, the
constant-voltage line defined by the rated voltage; L
2
, the constant-power line defined by the
rated power; L
3
, the constant-current line defined by the rated current; and L
4
, the constant-
voltage line defined by the minimum operating voltage (the enclosed area is where
specifications are guaranteed). The specifications are guaranteed for input voltages greater
than or equal to 5 V, but the PLZ-4WH can be used at lower voltages (actual operating area)
if the current is reduced. However, the specifications are not guaranteed.
The minimum operating voltage at which current begins to flow through the PLZ-4WH is
approximately 0.5 V. If the input voltage is gradually increased from 0 V, no current will flow
until this minimum operating voltage is exceeded. If the input voltage exceeds the minimum
operating voltage and a current greater than or equal to 1 % of the range rating (greater than
or equal to 1 % of the H range when the PLZ-4WH is set using the M range) starts flowing,
the current can keep flowing even when the voltage is reduced down.
For the operating areas of each model, see " Operating areas of each model".
Basic operation modes
The following six operation modes are available on the PLZ-4WH.
• Constant current mode (CC mode)
• Constant resistance mode (CR mode)
• Constant power mode (CP mode)
• Constant voltage mode (CV mode)
• Constant current and constant voltage mode (CC+CV mode)
• Constant resistance and constant voltage mode (CR+CV mode)
H-Range
Operating
Area of the
PLZ-164WH
650
100
10
5
1
0.5
0.1 0
0.5
5
0.1
0.2
1 0
5
10
100
8.25 8.25
10
Input voltage [V]
Input voltage [V]
Input current [A]
Input current [A]
Actual operating area
Actual operating area
Operating area
where specifications
are guaranteed
Operating area
where specifications
are guaranteed
Low voltage area
165 W
Low voltage area < 5 V
L1
L2
L3
L4
L3
L4
