SPC-9250 SWITCH MODE POWER SUPPLY
USER’S MANUAL
INTRODUCTION
The SPC-9250 Switching Mode CC/CV DC Power Supply provides high power output with its small
size and lightweight. It's suitable for a wide range of applications such as production testing, laboratory,
telecommunication, powering of DC network and etc to provide variable voltages of 1V to 15V under
25A continuous operation.
The ten-turn potentionmeters provide precise output voltage and current control. The 3 digit LED
meters will clear indication of automatic cross over of CC and CV mode provide easy read outs.
Please read through this operation instruction carefully and follow the instructions to prevent from
abuse or misuse. This manual must be kept for reference at anytime in need.
FEATURES
1. Lightweight and Small Size: Switching mode power supply has the advantages of lightweight and
small size. Comparing with linear mode power with the same power output, it is much lighter and
smaller.
2. High Efficiency: The unit is operated with efficiency over 80% under the best condition.
3. The constant current circuit operates
to protect against overload and output short circuit. The limiting current
values can be preset in the full range of the rated values.
4. Over Temperature Protection: The over temperature circuitry is functioned when the unit is over a
certain high temperature to prevent the unit from damage by the high temperature. When the circuitry
is functioned, the output voltage and current will drop down to a safety value and the overloaded
indicator will be lighted up.
5. Over Voltage Protection:
The over voltage circuitry protect the unit and the loading equipment from damage
by abnormal high output voltage.
6. High RFI Stability: The high protection circuitry against RFI (Radio Frequency Interference) provides
a stable operation.
7. Variable Voltage Output: The variable range of output voltages from 1V to 15V enables good fits
with various uses.
PANEL DESCRIPTION
1. On/Off Switch
2. CC Display : Indicates the unit is in constant current mode
3. CV Display : Indicates the unit is in constant voltage mode
4. Voltmeter
5. Ammeter
6. Output Voltage Adjustment knob
7. Output Current Adjustment knob
8. Cooling Fan Air Intake Window
9. Power Input Connector
10. Fuse Holder
11. Output Terminal
Note: The fixed 13.8Vdc output selection switch is placed at the bottom of unit. It used to select the
output voltage to fixed 13.8V or adjustable output 1-15V (controlled by adjustment knob).
