Good Will Instrument PSH-10100 User Manual - page 10
PSH SERIES PROGRAMMABLE POWER SUPPLY
USER MANUAL
14
Figure 5-1 Constant Voltage/Constant Current Characteristic
Similarly, crossover from the constant current to the constant voltage
mode automatically occurs from a decrease in load, a good example
of this would be seen when chargi ng a 12 volt battery. Initially, the
open circuit voltage of the power supply may be preset for 13.8 volts.
A low battery will place a heavy load on the supply and it will
operate in the constant current mode, which may be adjusted for a 1
amp charging rate. As the battery becomes charged, and its voltage
approaches 13.8 volts, its load decreases to the point where it no
longer demands the full 1 amp charging rate. This is the crossover
point where the power supply goes into the constant voltage mode.
5-2. Output Voltage/Current Setting
At first, set to voltage/current setting window or output value
displayed window:
--Output Voltage Setting:
Switch the flashed cursor to voltage input position by pressing
[Vset/Iset] key, and modify the setting value by using the wheel
PSH SERIES PROGRAMMABLE POWER SUPPLY
USER MANUAL
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knob. Now, use the [F/C] key to input the integral or dismal
number.
Example: Set voltage at 20.00V.
Switch the cursor to mV range by using the [F/C] key
and adjust the value to number 00 with the rotation knob,
then switch the cursor to V range by using the [F/C] key
and adjust the value to number 20 with the rotation knob
to complete the modification.
PS. At the moment, if the OUTPUT is on, the output voltage will
be output the corresponding voltage value immediately
following the adjustment of the rotation knob.
--Output Current Setting:
Switch the flashed cursor to current input position by pressing
[Vset/Iset] key, and modify the setting value by using the wheel
knob.
Now, use the [F/C] key to input the integral or dismal number.
Exa mple: Set voltage at 18.00A.
Switch the cursor to mA range by using the [F/C] key
and adjust the value to number 00 with the rotation knob,
then switch the cursor to A range by using the [F/C] key
and adjust the value to number 18 with the rotation knob
to complete the modification.
PS. When the load current of output terminal exceeds the current
setting value, the instrument is operated under the Constant
Current mode (C.C. Mode), if it doesn’t exceed the current
setting value, the instrument is operated under the Constant
Voltage mode (C.V. Mode).
If the maximum output voltage of the instrument is larger than
36V, the minimum adjustable step of the rotation knob is