Wanptek Adjustable DC Power Supply User Manual

1. Introduction

Thank you for choosing the Wanptek Adjustable DC Power Supply. This device is a miniature switching DC power supply designed for various applications requiring a stable and adjustable DC power source. It features high precision, multiple protection mechanisms, and user-friendly controls. This manual provides essential information for the safe and efficient operation of your power supply.

2. Product Features

• Compact Design: Small size, light weight, and high power density.
• Automatic Switching: Automatically switches between constant voltage (CV) and constant current (CC) modes.
• High Precision Display: Four-digit LED display for voltage (0.01V resolution), current (0.001A resolution), and power, ensuring high accuracy.
• Adjustable Output: Output voltage and current can be continuously adjusted from 0 to their nominal values using fine and coarse regulating controls.
• Comprehensive Protection: Equipped with Over Voltage Protection (OVP), Over Current Protection (OCP), and Over Temperature Protection.
• Intelligent Cooling: Features a temperature-controlled fan that activates automatically when the internal temperature exceeds 50℃ (122℉), ensuring low noise and long product life.
• Dual Voltage Input: Supports AC 110V and 220V input, selectable via a switch.
• Encoder Adjustment: Provides precise control over voltage and current settings.
• Memory Functions (TPS-C Series Only): Allows saving and recalling up to three sets of frequently used voltage and current settings (M1, M2, M3).
• USB Output with Display (TPS-C Series Only): USB-A port with current output display for convenient charging of external devices.
• Function Lock Button (TPS-C Series Only): Prevents accidental changes to settings during operation.
• Certifications: FCC & CE certified product.

3. Package Contents

Please check the package for the following items:

• 1x Wanptek DC Power Supply Unit
• 1x Power Cord (appropriate plug type for your region: EU, US, UK, AU)
• 1x Test Leads (red and black)
• 1x User Manual

Figure 3.1: Package Contents

4. Setup

4.1 Power Connection

1. Before connecting the power supply, ensure the voltage selection switch on the rear panel is set to your local mains voltage (115V or 230V). Incorrect selection can damage the unit.
2. Connect the provided power cord to the AC input socket on the rear panel of the power supply.
3. Plug the other end of the power cord into a suitable AC power outlet.

Figure 4.1: Rear Panel with Voltage Selector and Fan

4.2 Output Connection

1. Connect the red test lead to the positive (+) output terminal and the black test lead to the negative (-) output terminal on the front panel.
2. Connect the other ends of the test leads to your load device, ensuring correct polarity.

Figure 4.2: Output Terminals

5. Operating Instructions

5.1 Power On/Off

Press the POWER switch (17) on the front panel to turn the unit ON or OFF.

5.2 Adjusting Voltage and Current

1. Rotate the Voltage adjustment knob (13) to set the desired output voltage.
2. Rotate the Current regulation knob (14) to set the desired output current limit.
3. For fine adjustments, press the knob to move the numerical position, then rotate to change the value.
4. Press and hold the voltage knob for 3 seconds to turn off/on the prompt sound.

Figure 5.1: Voltage and Current Adjustment

5.3 Output Enable/Disable

Press the OUT button (12) to enable or disable the power output. This prevents accidental load damage when adjusting voltage or current.

Figure 5.2: Output Enable/Disable Button

5.4 Numerical Storage (Memory Function - TPS-C Series Only)

The TPS-C series models feature M1, M2, and M3 buttons (9) for storing and recalling settings:

1. To Save: Set the desired voltage and current. Long press one of the M1/M2/M3 buttons to save the current settings to that memory slot.
2. To Recall: Short press one of the M1/M2/M3 buttons to recall the stored settings.

Figure 5.3: Memory Function Buttons

5.5 Short Circuit Protection (OCP)

When the OCP (Over Current Protection) function is activated, if a short circuit or overcurrent occurs in the output, the machine will stop outputting and issue a buzzer alarm and an 'OCP' character prompt on the display.

Figure 5.4: Short Circuit Alarm

5.6 USB Fast Charging (TPS-C Series Only)

The TPS-C series models include a USB-A port for fast charging external devices. The display shows the real-time output voltage and current for the USB port.

Figure 5.5: USB Fast Charging

5.7 Function Lock Button (TPS-C Series Only)

The function lock button (10) can be used to prevent accidental operation or changes to the settings. Press this button to lock/unlock the controls.

6. Maintenance

6.1 Cooling System

The power supply is equipped with an intelligent cooling fan that automatically starts working when the internal temperature exceeds 50℃ (122℉). Ensure that the ventilation openings on the sides and rear of the unit are not obstructed to allow for proper airflow.

6.2 Fuse Replacement

The unit contains a fuse for protection. If the unit fails to power on, check the fuse located in the fuse box on the rear panel. Replace it with a fuse of the same type and rating if necessary.

7. Troubleshooting

• No Power: Check the power cord connection and the voltage selection switch on the rear panel. Verify the fuse is intact.
• No Output: Ensure the OUT button is pressed (output enabled). Check for OCP (Over Current Protection) or OVP (Over Voltage Protection) indicators on the display.
• OCP Alarm: If the OCP alarm activates, it indicates an overcurrent condition or a short circuit in the load. Disconnect the load, reduce the current setting, and re-enable the output.
• Incorrect Readings: Ensure test leads are properly connected and not damaged. Compare readings with a calibrated multimeter if precision is critical.

8. Specifications

9. User Tips

• Understanding Constant Current (CC) Mode: In Constant Current (CC) mode, the power supply will maintain the set current limit, even if the load resistance changes. This means if you set a 60V/5A model to 5A, it will not provide more than 5A, regardless of the voltage setting, as long as the load demands less than the maximum voltage. The voltage will adjust to maintain the set current.
• Initial Setup: Always double-check the 115V/230V switch on the back before plugging in the power supply to avoid damage.
• Safety First: Use the output enable/disable button (OUT) to safely connect and disconnect your load without sudden power surges.

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase or visit the official Wanptek website. Keep your purchase receipt as proof of purchase.

11. Product Video