Introduction of Wanptek DPS305U DC Power Supply

The Wanptek DPS305U DC Power Supply is a versatile and reliable power source designed for various applications, including electronics labs, industrial automation, and telecommunications. This product is expected to launch in the second quarter of 2023 with an estimated price range of $150 to $200. The DPS305U is a single-output DC power supply, providing a stable voltage and current for your devices.

Wanptek DPS305U 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 

Specifications

Product Overview of Wanptek DPS305U

DPS series products are a three-window four-bit high-precision switching DC regulated power supply, which can display voltage, current and power at the same time. Products are widely used in mobile phone maintenance, computer maintenance, school and production line use, its output voltage and output current can be continuously adjusted between O and nominal value. Power supply stability and ripple coefficient are very good, with USB fast charging function and perfect short circuit protection circuit. It is small in size, beautiful in design, convenient in operation, and can work long hours at full load.  It is loved by the vast number of users. 

Description

The Wanptek DPS305U DC Power Supply offers the following features:

• Output power: 30W
• Output voltage: 0-30V
• Output current: 0-5A (adjustable)
• Display: Digital LCD screen
• Protection: Over-voltage, over-current, and short-circuit protection
• Adjustable voltage and current knobs
• Cooling system: Intelligent fan control
• Communication: RS-232 interface for remote control

Wanptek DPS305U Panel Description 

1. Voltage Display 
2. Current Display 
3. Power Display 
4. CV Indicator Light 
5. CC Indicator Light 
6. Voltage Coarse 
7. Voltage Fine 
8. Current Coarse 
9. Current Fine 
10. Quick Charge 
11. Short Circuit Alarm 
12. Power Switch 
13. GND (Green) 
14. - (Black)
15. + (Red) 
16. Fan
17. Power Selection
18. Ac Socket
19. Fuse Box
20. Sticker

Wanptek DPS305U DC Power Supply Setup Guide

To operate and configure the Wanptek DPS305U DC Power Supply, follow these steps:

1. Turn on the unit and set the desired voltage and current using the adjustable knobs.
2. Connect your device to the power supply using the appropriate cables.
3. Select the proper voltage and current settings based on your device's requirements.
4. Monitor the voltage and current levels on the LCD screen.
5. To use the RS-232 interface for remote control, connect the interface to your computer and use the provided software.

Work requirements 

1. AC Input
   • Please confirm the AC voltage allowed by this machine first This machine can realize two kinds of: 
   • AC voltage input through the switch of back panel,  AC 230V±10% or AC 115V±10% 
   • When you can see "230V",Permissible input voltage, AC230V± 10% 

   • When you can see "115V",Permissible input voltage, AC115V± 10%

     

   • The wrong input of AC voltage will cause serious damage to the machine. Please confirm the input voltage required by the machine. 
2. Do not use in places where the ambient temperature exceeds 40 C. The exhaust fan is  localed at the back of the instrument. There should be enough space for heal dissipation. 
3. Positive and negative output terminals need lo be properly connected and in good  contact, otherwise the connection will heat and damage the machine. 

Operation instructions 

• There are two modes of power output constant voltage output (C.V) and constant current oulpul (C.C). The output mode is determined by !he voltage and current values set by the user and the load that the user receives. The output voltage or current value of the power supply will not exceed the voltage and current value set by the user. 
• In the conslant voltage mode, !he output voltage is equal lo the voltage sel by !he user. In constant current mode, the output current value is equal to the current value set by the user. 

Voltage regulation 

1. Adjust !he voltage roughly lo !he required voltage value, !hen fine-lune the knob lo he required specific voltage value.
2. In general, !he current knob can be adjusted to the maximum, and !hen !he load can  be connected for use. 

Current regulation

When the user needs to adjust the limiting current output, 

1. Firstly, adjust the voltage to about 5-10V, then short-circuit the positive and negative  terminals with wires (short-circuit alarm needs lo be set lo C.C position), 
2. Adjust the current to roughly adjust the knob to the required current value, and then  fine-tune the knob to the required specific current value. 
3. After disconnecting the short-circuit conductor and adjusting the required voltage by "voltage regulation" method, the connection load can be used. 

For Exampl :Voltage value is set to SV and current value is set to SA. 

1. Tum on the power switch 
2. Adjust the voltage adjustment knob to SV 
3. Connect the "positive" and "negative" poles with wires, and adjust the current knob to SA. 
4. Disconnect the conductor and connect the load. 

WARNING: In actual CV operation, if the load resistance decreases and the output current increases to the set current value, the power supply will automatically switch to CC mode. When the load resistance continues to decrease, the current will remain at the set current value, and the voltage will decrease proportionally (I = V/R). At this time, the output state of CV can be restored by increasing load resistance or current setting value. 

Short Circuit Alarm 
This machine has the function of short circuit alarm interruption output, automatic return output for removing short circuit. 
Usage method

1. Put the short-circuit alarm switch to the OCP position , that is, turn on this function. When the output short-circuit (over-current) occurs, the machine will stop output and send out buzzing and OCP character prompts. When the output short circuit is removed, the machine will automatically return to normal output. 
2. Put the short-circuit alarm switch to the C.C position , that is, turn off this function. When the output is short-circuit (over-current), the machine will output the maximum constant current according to the current set by the user. 
3. The machine judges whether or not the output short circuit is based on whether the output current is larger than the current set by the user. Therefore, under this function, the machine can not work in constant current mode.

USB Quick Charging 
This machine supports USB fast charging function, and has built-in fast charging protocol identification chip. It can provide fast charging for mobile phones, PAD, charging treasure and other devices with fast charging function. The output voltage and current are automatically adjusted according to the fast charging protocol of the equipment. When an electronic device without fast charging function is used, it will be charged according to the standard SV. 
Supporting fast charging protocols include:  Qualcomm QC2.0, QC3.0, APPLE, Huawei FCP, SCP Samsung AFC and other fast charging protocols 

Connection load 

1. Rotate counterclockwise lo loosen the terminal knob 
2. Insert Load Terminal 
3. Tum and tighten the knob of the connecting post clockwise 

4. Banana plug can be directly inserted into connection post hole 

   

WARNING: The wrong connection may cause damage to the power supply and load. When connecting the battery and other loads, do not connect the'+','-'poles in reverse, which may damage the power supply. 

Constant Pressure/Current Characteristics

The operating characteristics of this series of power supply are constant voltage/constant current automatic conversion type. II can automatically change between constant voltage and constant current stale with !he change of load. The intersection point between constant voltage and constant current mode is called conversion point. 

For example, if the load makes !he power supply work in a constant voltage mode, a constant voltage is Vmax  7,1 output As the load increases, the output voltage will  remain stable and the output current will increase. When the current value reaches the set current limit,  the power supply will automatically be converted to constant current mode. The output current remains stable and the output voltage decreases proportionally with the further increase of the load. The conversion between constant voltage and conslanl current is indicated by the LED of the front panel. CV indicator is on at constant voltage and CC indicator is on al constant current.

Fuse replacement 

If the fuse burns out, the machine will stop working. To find out and correct the cause of fuse burnout, and then use the same specifications of the fuse replacement 

WARNING: For effective safety protection, it is limited to the replacement of fuses of specified specifications. Before the replacement of fuses, the power supply must be switched off and the power cord must be pulled out of the power socket. 

Wanptek DPS305U Maintenance 

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

Troubleshooting

Here are some common issues you may encounter and their respective solutions:

• Common Problem 
  Power can't be turned on 
  Check and verify whether !he power cord has alternating current and the fuse is in good condition. 
• Power supply no! output 
  Check that the output line is in good condition. Whether !he voltage or current is turned up or not 
• What is Conslant Voltage (C.V) 
  The power supply output is constant according to the voltage set by the user, and the current will be supplied according lo 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 turns to the constant current mode. At this time, the current remains unchanged, and the voltage will be supplied according to the demand of the load. 
• Power supply can not be output according lo the current size set by the user 
  The current value by the user refers to the maximum limit current value That allows the power supply to output, while !he actual output current value is supplied according  to the actual needs of the load, but it will not exceed the current limit set by the user. 

Wanptek DPS305U DC Power Supply Product Warranty 

1. The product will enjoy free maintenance service within one year from the date of purchase. Except for the following: 
   • Failure to produce the warranty card for !his product:
   • Faults arising from abnormal use, such as improper manual operation and improper repair, modification or adjustment of devices:
   • Consumable materials are no! covered by warranty. 
   • Natural irresistible disasters, such as floods, fires, earthquakes, etc.
2. Maintenance fees are charged for repairs that exceed the warranty period. Users will lake care of the maintenance fees. 

Pros & Cons

Pros

• Wide output voltage and current range
• Digital LCD screen for easy monitoring
• Over-voltage, over-current, and short-circuit protection
• Intelligent fan control for cooling
• RS-232 interface for remote control

Cons

• May be expensive for some users
• Limited to single-output configuration

Customer Reviews about Wanptek DPS305U DC Power Supply

Users appreciate the DPS305U DC Power Supply for its stable output, easy-to-use interface, and durable construction. However, some users have reported issues with the fan noise, particularly during extended use at high power levels. Others have suggested that the user manual could be more detailed and user-friendly.