36
PBZ
Operation Modes
The PBZ has the following two operation mode settings. You can specify each setting
individually.
●
Bipolar/unipolar mode
In bipolar mode, the PBZ operates as a bipolar power supply.
In unipolar mode, the PBZ operates as a power supply that generates positive voltage
and positive and negative (source and sink) current. If you want to generate negative
voltage, reverse the output wiring.
●
CV/CC mode
In CV mode, the PBZ operates as a constant voltage source.
In CC mode, the PBZ operates as a constant current source.
Bipolar/Unipolar Mode
●
Bipolar mode
As shown in the figure above, the operation of the PBZ in bipolar mode is shown on a
graph of voltage (vertical axis) versus current (horizontal axis). The PBZ operates in all
four quadrants (and thus the name four-quadrant operation).
●
Unipolar mode
Unipolar mode is a characteristic feature of the PBZ. Voltage of a single polarity is
generated, so this mode is called unipolar mode. A unipolar power supply can only
generate current in a single direction, but when the PBZ operates in unipolar mode, it can
handle bidirectional current (source and sink). As shown in the figure above, the operation
of the PBZ in unipolar mode is shown on a graph of voltage (vertical axis) versus current
(horizontal axis). The PBZ operates in the first and second quadrants (two-quadrant
operation).
Use
to select the bipolar/unipolar mode.
Optimizing the operating region to reduce internal loss
In bipolar mode, when the PBZ is connected to a load that either generates or absorbs
energy, if we consider the operation of the PBZ on a graph of voltage (vertical axis) versus
current (horizontal axis), the PBZ operates mostly in the second and fourth quadrants.
Because the output amplifier’s internal loss is large, under some voltage and current
conditions, the PBZ may not be able to produce output up to its rated values.
Second
quadrant
Second
quadrant
Third
quadrant
First
quadrant
First
quadrant
Fourth
quadrant
V
-V
I
-I
0
0
V
I
-I
Bipolar mode
(four-quadrant operation)
Unipolar mode
(two-quadrant operation)
See
CONFIG
Содержание PBZ20-20
Страница 11: ...PBZ 11 ...
Страница 18: ...18 PBZ ...
Страница 75: ...Memory Response and Configuration This chapter explains preset memory setup memory response and configura tion ...
Страница 95: ...Sequences This chapter explains sequences ...
Страница 153: ...Maintenance This chapter describes how to clean and inspect the PBZ ...
Страница 156: ...156 PBZ Maintenance ...
Страница 157: ...Appendix A List of Factory Default Settings B Troubleshooting C List of Error Messages D Options ...