GW Instek PSH-A Series 360W User Manual - Manual (Page 23)

Panel Operation
45
Constant Voltage/ Constant Current
Crossover Characteristic
PSH series automatically switch
between constant voltage mode
and constant current mode,
according to the load change.
When the load current is
smaller than the limit (I
SET ),
PSH operates in Constant
Voltage mode, changing the
current level according to the
load but keeping the Voltage
level at the limit (V
SET ).
When the load current is the
same as the limit (I SET ), PSH
operates in Constant Current
mode, changing the Voltage level
according to the load but
keeping the Current level at the
limit (I SET ).
V SET
I SET
Constant
Voltage
Constant
Current
V
I
V SET = Output Voltage setting
I SET = Output Current setting
Let’s take recharging a 12V battery as an example. PSH output
setting is 13.8V, 1A. An empty battery puts a heavy current load
on the power supply. PSH starts running at Constant Current
mode, supplying full 1A current but keeping the voltage lower
than 13.8V. As the battery becomes charged, the load also
becomes smaller. PSH then switches to Constant Voltage mode,
supplying less than 1A current but supplying full 13.8V.
Display The display indicates CV (Constant Voltage) or CC
(Constant Current) on the left side.
Constant Voltage
OCP OUT
CV 2.58V 1.99A
Constant Current
OUT
CC 1.33V 2.00A
PSH User Manual
46
Output Voltage Setting
Operation
1. Press the Vset/ Iset key
V SET / I SET
repeatedly to move the underline
to the Voltage side.
OCP
SET 2.58V 2.01A
2. Press the F/C key
F/C
to move the
underline before or after the
decimal point.
OCP
SET 2.58V 2.01A
3. Use the wheel knob to change the output voltage.
Range 0.00V ~ rating voltage
Step 10mV (rating voltage < 36V)
20mV (rating voltage ≥ 36V)