WANPTEK DPS Series DC Power Supply

Catalog

• Security Profile
• Product Overview
• Specification Parameter
• Panel Description
• Operation Instructions
• Short Circuit Alarm
• USB Quick Charging
• Connection Load
• Constant Pressure/Current Characteristics
• Fuse Replacement
• Product Maintenance
• Product Warranty
• Packing List
• Common Problem

Security Profile

This manual contains important safety information that DPSxxxx series products must follow in operating, using, and storage environments. To ensure your personal safety, read this manual thoroughly before using the product to ensure it operates in the best environment.

When you receive a new power supply, perform the necessary checks to ensure normal use:

1. Check for damage caused by transportation.
2. Verify that all accessories are present.
3. Before switching on, check the input power switch located on the back of the machine to ensure it matches your actual input voltage.
4. After powering on, check the output voltage and current to ensure they are normal.

If any issues are found during these inspections, contact the distributor promptly.

Safety Symbols

The following safety symbols may appear in the manual or on the machine:

Product Overview

WANPTEK DPS series products are three-window, four-digit, high-precision switching DC regulated power supplies that can simultaneously display voltage, current, and power. These products are widely used for mobile phone maintenance, computer maintenance, educational institutions, and production lines. The output voltage and current are continuously adjustable from 0 to their nominal values. The power supply offers excellent stability and a low ripple coefficient, along with a USB fast charging function and a robust short-circuit protection circuit. Its compact size, attractive design, and ease of operation allow for long hours of work at full load, making it a popular choice among users.

Specification Parameter

Panel Description

The front panel of the WANPTEK DC Power Supply features the following components:

The rear panel includes:

Operation Instructions

Work Requirements

1. AC Input: Confirm the AC voltage allowed by the machine. This machine supports two AC voltage inputs via the back panel switch: AC 230V±10% or AC 115V±10%. Ensure the correct voltage is selected. Using the wrong AC voltage can cause serious damage.
2. Avoid using the device in environments where the ambient temperature exceeds 40°C. Ensure adequate space around the instrument for heat dissipation, as the exhaust fan is located at the back.
3. Connect the positive and negative output terminals properly and ensure good contact. Improper connections can lead to overheating and damage to the machine.

Voltage Regulation

1. Roughly adjust the voltage to the desired value using the coarse adjustment knob, then fine-tune it with the fine adjustment knob.
2. Generally, adjust the current knob to its maximum setting before connecting the load.

Current Regulation

To adjust the limiting current output:

1. First, set the voltage to approximately 5-10V. Then, short-circuit the positive and negative terminals using wires (ensure the short-circuit alarm is set to the 'OCP' position).
2. Adjust the current using the coarse and fine adjustment knobs to the desired current limit.
3. After disconnecting the short-circuit conductor and setting the required voltage using the "voltage regulation" method, connect the load.

Short Circuit Alarm

This machine features a short-circuit alarm with output interruption and automatic return upon removal of the short circuit.

Usage Method:

1. Set the short-circuit alarm switch to the 'OCP' position (✅). This enables the function. If a short circuit (over-current) occurs, the machine will stop output, sound an alarm, and display 'OCP'. When the short circuit is removed, the machine will automatically return to normal output.
2. Set the short-circuit alarm switch to the 'CC' position (❌). This disables the function. If a short circuit (over-current) occurs, the machine will output the maximum constant current as set by the user.

The machine determines a short circuit by checking if the output current exceeds the user-set current. Therefore, when this function is active, the machine cannot operate in constant current mode.

USB Quick Charging

This device supports USB fast charging and includes a built-in fast charging protocol identification chip. It can fast charge mobile phones, tablets, power banks, and other devices with fast charging capabilities. The output voltage and current are automatically adjusted according to the device's fast charging protocol. For devices without fast charging, it defaults to a standard 5V charge.

Supported fast charging protocols include:

• Qualcomm QC2.0, QC3.0
• Apple
• Huawei FCP, SCP
• Samsung AFC
• Other fast charging protocols

Connection Load

Follow these steps to connect the load:

1. Rotate the terminal knob counterclockwise to loosen it.
2. Insert the Load Terminal.
3. Turn and tighten the knob of the connecting post clockwise.
4. Banana plugs can be directly inserted into the connection post holes.

Constant Pressure/Current Characteristics

The operating characteristics of this series of power supply are of the constant voltage/constant current automatic conversion type. It can automatically switch between constant voltage and constant current modes based on load changes. The point where constant voltage and constant current modes intersect is called the conversion point.

For example, if the load causes the power supply to operate in constant voltage mode, a constant voltage is output. As the load increases, the output voltage remains stable, and the output current increases. When the current reaches the set limit, the power supply automatically converts to constant current mode. The output current remains stable, and the output voltage decreases proportionally as the load further increases. The conversion between constant voltage and constant current is indicated by the LEDs on the front panel: the CV indicator is lit in constant voltage mode, and the CC indicator is lit in constant current mode.

Diagram Description: A graph showing Output Voltage (Vout) on the y-axis and Output Current (Iout) on the x-axis. The graph shows a horizontal line at Vmax until the current reaches Imax, at which point it transitions to a vertical line at Imax. The conversion point is where these two lines meet.

Fuse Replacement

If the fuse blows, the machine will stop working. Identify and correct the cause of the fuse burnout before replacing it with a fuse of the same specifications.

Method of replacing fuse:

1. First, remove the power plug.
2. Open the fuse seat according to the diagram.
3. After replacing the fuse with one of the same type and specifications, reinstall the fuse holder.

Diagram Description: An illustration showing a screwdriver removing a fuse from a fuse holder, and another illustration showing a fuse holder being reinserted into a power outlet. The text indicates that the fuse is seated on the power outlet.

Product Maintenance

1. When the machine is not in use, disconnect the power supply.
2. Pull out the power plug before cleaning the machine.
3. Do not use hydrocarbons, chlorides, similar solvents, or detergents containing abrasive ingredients for cleaning.

Product Warranty

1. The product is covered by free maintenance service for one year from the date of purchase, with the following exceptions:
   • Failure to present the warranty card for this product.
   • Faults arising from abnormal use, such as improper manual operation, repair, modification, or adjustment of the device.
   • Consumable materials are not covered by the warranty.
   • Natural disasters, such as floods, fires, earthquakes, etc.
2. Maintenance fees will be charged for repairs exceeding the warranty period. Users are responsible for these fees.

Packing List

1. The whole machine *1
2. Power cord *1
3. Output Load Line *1
4. Instructions for Use *1
5. Guarantee Card Qualification Certificate *1

Common Problem

Power can't be turned on

Check and verify if the power cord is connected to an alternating current source and if the fuse is in good condition.

Power supply not output

Check if the output line is in good condition and if the voltage or current is turned up.

What is Constant Voltage (C.V)?

The power supply output is constant according to the voltage set by the user. The current supplied will be based on the actual needs of the load.

What is Constant Current (C.C)?

When the current required by the load exceeds the limit current set by the user, the power supply automatically switches to constant current mode. At this point, the current remains unchanged, and the voltage is supplied according to the load's demand.

The power supply can not be output according to the current size set by the user

The current value set by the user represents the maximum limit current the power supply can output. The actual output current is supplied based on the load's needs, but it will not exceed the user-set current limit.