Good Will Instrument GPS-2303 User Manual - page 9
MULTI-OUTPUT POWER SUPPLY
USER MANUAL
10
(29)
&
(30)
TRACKING
Mode Switch
Two push-button switches that select Independent mode, series
tracking mode, or parallel tracking mode as follows:
a. When both switches are disengaged (out), the unit is in the Independent mode
and the CH1 and CH2 power supplies are completely independent from each
other.
b. When the left switch is engaged (in) and the right switch is disengaged (out), the
unit is in the Tracking series mode, maximum voltage of both supplies is set
using the CH1 VOLTAGE controls (voltage at output terminals of the CH2
supply tracks the voltage at the output terminals of the CH1 SUPPLY). Also, in
this mode of operation, the positive terminal (Red) of the CH2 supply is
connected to the negative terminal (Black) of the CH1 supply to allow the two
supplies to be used as a 0 to double rating voltage supply.
c. When both switches are engaged (in), the unit is in the Tracking Parallel mode,
the CH1 and CH2 supplies are wired together in parallel and both the maximum
current and voltage are set using the CH1 controls. The CH1 and CH2 output
can be used as two individual (but tracking) power supplies or just the CH1
output can be used as a 0 to rating voltage supply with a 0 to double rating
current capability.
4-2. Real Panel
(31) Fuse holder
(32) Power socket
(33)
&
AC selects switch
: Selects to permit operation from 100, 120, 220 or 230VAC,
50/60Hz line voltage by using (34) HI-LO switch.
(34) HI-LO switch
: HI position selects high voltage range (120, 230V AC
inputs), LO position selects low voltage range (100, 220V
AC inputs).
(35)
Cooling Fan
: Ventilates the hot air out, to prevent output stage from
thermo shock, and improves the temperature coefficient.
MULTI-OUTPUT POWER SUPPLY
USER MANUAL
11
5. OPERATION INSTRUCTION
5-1. Precaution
(1)
AC input
AC input should be within the range of line voltage ± 10% (230V
+10%~-6%) 50/60Hz.
WANING. To avoid electrical shock, the power cord
protective grounding conductor must be connected to ground.
AVERTISS: Pour éviter les chocs électriques, le fil de terre du
cordon secteur doit impérativement être relié à la terre.
(2) Installation
Avoid using the supply in a place where ambient temperature exceeds 40
℃.
The heat sink located at the rear of the supply must have sufficient air space
for radiation.
CAUTION. To avoid damaging the power supply, don’t use
it in a place where ambient temperature exceeds 40
℃.
(3) Output voltage overshoot
Voltage between output terminals never exceeds the preset value when the
power is turned on or off.
5-2. Setting Current Limit
(1) Determine the maximum safe current for the device to be powered.
(2) Temporarily short the (+) and (-) terminals of the power supply together with a test
lead.
(3) Rotate the VOLTAGE control away from zero sufficiently for the CC indicator to
light.
(4) Set the meter selection switch to “A” position to select the current metering mode.
(5) Adjust the CURRENT control for the desired current limit. Read the current value
on the Ammeter.
(6) The current limit (overload protection) has now been preset. Do not change the
CURRENT control setting after this step.
(7) Remove the short between the (+) and (-) terminals and hook up for constant voltage
Test Equipment Depot 99 Washington Street Melrose, MA 02176-6024
www.testequipmentdepot.com 800-517-8431 781-665-0780 FAX