New RS-232 standard interface (and USB interface) : is a common serial communication interface standard, connected to the computer through the cable, after the installation of software, can realize the control function, and data transmission and record.

This high power supply use advanced technology PWM.Rating obtain ultra-low ripple ,high-precision reference voltage source, rational circuit design, the ability to provide highly accurate output. High-power MOS devices is application to ensure adequate power supply, improve the long-term stability of the power at full load work. Perfect protection function, in order to protect the load and the power supply are not damaged. Simple operation, and a plurality of power supply can be directly connected in series, parallel, expanded power Range of applications.

Application range:

1. Production line test, PCB board power-on test, LED lamp power-on test.
2. Mobile phone maintenance, computer maintenance, electrical appliance maintenance,Car DVD, car audio.
3. Product aging, electroplating,such as resistors, capacitors, relays, DC motors, LEDs, etc.
4. Charge the battery(drone, lead-acid battery, lithium battery).
5. Laboratory, scientific research teaching,factory, maintenance power supply.school laboratories scientific research and production line use.
6. Chemical electroplating and electrolysis, anodic oxidation.
7. DIY electronic products test.
8. All other occasions requiring DC power supply.

Features:

1.LED screen display, 4-digit display, with power display.
2. Double knob encoder digital model for precise adjustment.
3. "M1/M2/M3" 3 groups of storage memory function buttons to set commonly used current and voltage.
4. "LOCK" lock screen button, lock the screen to avoid accidentally touching the current and voltage.
5. "OCP" current limit protection button. When the output current exceeds the limit current, the output is disconnected, the buzzer alarms, and OCP is displayed.
6. "OVP" voltage limit protection button. When the output voltage exceeds the limit voltage, the output is disconnected, the buzzer alarms, and OVP is displayed.
7. "OUTPUT" output switch controls the current and voltage output to turn on/off.
8. Buzzer function, there will be a sound when rotating and pressing the knob or button.
9. USB communication interface, the current and voltage can be controlled by connecting to computer software. The software has programming function and 10 sets of storage memory functions.

Technical Parameters:

Input voltage: AC220/110V±10% 50/60Hz
Working temperature: -10 ° C -40 ° C Relative humidity <90%
Storage temperature: -10 ° C -70 ° C Relative humidity <80%
Regulated state: Voltage stability ≤ 1% + 30mV
Load stability ≤ 1% + 30mV
Recovery time ≤100us
Ripple noise ≤50mVrms
Temperature coefficient ≤300PPM/°C
Steady flow state: Current stability ≤ 1% + 30mA
Load stability ≤ 1% + 30mA
Ripple noise ≤ 50mArms (effective value)

The above parameters are measured at an ambient temperature of 25±5°C, relative humidity: <80%RH, and preheated for 30 minutes.The actual parameters will varyslightly.

WORK REQUIREMENT
1. AC input: Please make sure the input voltage of this product( 230V±10%50Hz /115 V±10%60Hz).
2.Do not use in an environment where the ambient temperature exceeds 40 degrees Celsius.The cooling fan is located at the rear of the device and should have enough space for cooling.
3.lncorrect AC voltage input will cause serious damage to the device.Please make sure the required inputvoltage value.

OPERATION INSTRUCTION
There are two types of power output modes: constant voltageoutput (CV) and constant current output (CC).The output modeis determined by the voltage and current values set by the userand the load connected by the user.The output voltage or current value of the power supply won't exceed the voltage andcurrent values set by the user. In constant voltage mode, theoutput voltage value is equal to the user-set voltage value.Inconstant current mode, the output current value is equal to theuser-set current value.

The 'voltage value is set to 5A. Turn on the power switch
Steps
The voltage value is set to 5A
1. Turn on the power switch
2. Ajust the voltage adjustment knob to 5V

The current value is set to 5A
1. Press Output Button to the OFF state ,then adjust the current to 5A;
2. Press Output Button to the ON state,Connect Load to use.

CONNECT THE LOAD
1. Rotate the terminal knob by turning it counterclockwise
2. Insert the load terminal
3. Turn the terminal knob clockwise
4. Banana plug can be directly inserted into the terminal hole

CONSTANT VOLTAGE / CONSTANT CURRENTCHARACTERISTICs
The working characteristics of this series of power supplies are constant voltage constant current automatic conversion type,which can automatically change between constant voltage andconstant current states with load changes.The intersectionbetween constant voltage and constant current mode is calledconversion point.For example, if the load causes the power supply to operate in a constant voltage mode, a constant voltageis output.As the load increases, the output voltage will remainconstant and the output current will increase. When the currentvalue reaches the set current limit value, the power supply will automatically switch to constant current mode.The outputcurrent remains stable and the output voltage decreases
proportionally as the load increases further.The conversion of constant voltage and constant current is indicated by the LED onthe front panel.

CV indicator light is on during constant voltage, CC indicator ison when constant current.

FUSE REPLACEMENT
lf the fuse blows, the power supply will stop working.To find and correct the cause of the blown fuse, then replace it with a fuse ofthe same specification.

PRODUCT MAINTANCE
1. Disconnect the power when the product is not in use.
2.Unplug the power supply before cleaning.
3.Do not use hydrocarbons, chlorides or similar solvents, oruse abrasive cleaners.