Function Description
R&S
®
TS-PSU12
17
User Manual 1504.4524.12 ─ 05
tained. As soon as the accumulator voltage has also fallen to 6 V, no more current will
flow and discharging is complete.
5.2.1 Characteristic diagram
The maximum voltage or current values are determined by the characteristic data of
the R&S TS-PSU12. In addition to the absolute limits 12 V and 0,5 A, a maximum out-
put power (CURRENT_LIMIT * VOLTAGE_LEVEL) of 5 W must not be exceeded in
source operation and 6 W in sink mode (continuous operation). This results in the char-
acteristic diagram for Source and Sink mode shown here (
). Special cases
must be taken into consideration for low voltages.
SRC
5 W
Voltage in V
--0.25
--0.5
SRC
5 W
-100 mA
100 mA
Figure 5-2: Current/voltage characteristic diagram
5.2.2 Reverse polarity in load case
If an external source is connected to the R&S TS-PSU12 that has the opposite polarity
to the output voltage set, the R&S TS-PSU12 will attempt to impose the polarity set by
the user. This must not cause the maximum current set to be exceeded, however.
External behaviour depends on the external source and its ability to provide current.
5.2.2.1
Weak external source (current remains below the maximum current)
When weak external sources are connected, the R&S TS-PSU12 forces the polarity
set on its pins.
Power supply/load unit
