QJE QJ3003GIII - Operation; Features; Description

QJ3003GIII QJ3005GIII
4. Features:
 Voltage and Current dual LED display

Voltage and Current Coarse/Fine adjustment
 Protection mode: limited current output

Parallel or serial connection detection to automatically switch outputs
 Stylish plexi-glass display panel

Memory: 3 programmable memories
5. Description
The QJ3003GIII/QJ3005GIII is a high-precision, variable DC power supply. It can operate on either Constant
Voltage (C.V.) or Constant Current (C.C.) mode. While on C.C. mode, the voltage is adjustable between 0 and
30 volts. Whereas the current is adjustable between 0 and 5 amps when on C.V. mode. Dual channels output for
convenient serial or parallel setup, the 3
rd
output is fixed output at 5 volts.
1
Power Switch: On/Off Switch
13
Channel 2 Voltage Display
2
Switch: Output On/Off
14
Channel 1 Status Indicator
3
CH1 Channel 1
15
Channel 1 Voltage Display
4
CH2 Channel 2
16
Channel 2 Current Display
5
Data Storage
17
Channel 2 Status Indicator
6
Parallel Connection Button
18
Channel 1 Current Display
7
Serial Connection Button
19
Channel 2 Output
8
Key Lock
20
Ground
9
Voltage Adjustment Knob
21
Channel 1 Output
10
Current Adjustment Knob
22
Fixed Output 5V @ 3A
11
Voltage Coarse/Fine Adjustment Indictor
23
Ventilation Fan
12
Current Coarse/Fine Adjustment Indictor
24
Power cord connector and fuse box
6. Operation
Turn on or off power source
1. Connect the included power cord to the backside 【15 】 of the power supply, plug the other end into a
properly grounded power outlet.
Always connect the equipment to a grounded power outlet.
2. Press the power button 【1】to turn on the power supply, at this point there’s no output voltage or current at the
output terminals.
3. Press the power button 【1】to turn off the power supply,
4