1. Introduction
This manual provides essential information for the safe and efficient use of your MJJC Power Supply Unit. This unit functions as an LED Driver, Power Supply, or Lighting Transformer, converting AC input voltage to a stable DC output suitable for various LED lighting applications. Please read this manual thoroughly before installation and operation.
2. Safety Information
- Always disconnect power before installation or maintenance.
- Ensure proper grounding to prevent electrical shock.
- Do not expose the unit to moisture or extreme temperatures outside its specified operating range.
- Ensure the total power consumption of connected devices (e.g., LED strips) does not exceed the power supply unit's maximum wattage.
- Installation should be performed by a qualified electrician if you are unsure about electrical wiring.
3. Product Overview
The MJJC Power Supply Unit is designed for reliability and efficiency, featuring a super thin and compact design. Its aluminum case ensures high heat dissipation, contributing to its silent operation without any fan noise. The unit provides 100% real power, ensuring stable performance for your lighting needs.
Figure 1: MJJC Power Supply Units (60W, 100W, 200W, 300W, 400W)
4. Specifications
| Feature | Specification |
|---|---|
| Product Name | LED Driver / Power Supply / Lighting Transformer |
| Input Voltage | AC 110V-250V (for 60W-300W models), 170V-250V (for 400W models), 50-60Hz |
| Output Voltage | DC 12V or 24V |
| Power (Wattage) | 60W, 100W, 200W, 300W, 400W |
| Shell Material | Aluminum case |
| Working Temperature | 0°C to 60°C |
| Storage Temperature | -20°C to 60°C |
| Ambient Humidity | 0% to 95% Non-Condensing |
| Health Compliance | CE, EMC, LVD, RoHS |
| Weight | Approx. 0.2 KG (varies by wattage) |
| Warranty | 1 year |
4.1 Model-Specific Specifications
Figure 2: 60W 12V/24V Power Supply Specifications
Figure 3: 100W 12V/24V Power Supply Specifications
Figure 4: 200W 12V/24V Power Supply Specifications
Figure 5: 300W 12V/24V Power Supply Specifications
Figure 6: 400W 12V/24V Power Supply Specifications
5. Setup and Installation
Before connecting, ensure the power supply unit is suitable for your LED strip's voltage and wattage requirements. The power of the LED strip must be less than the power of the power supply unit.
5.1 Terminal Connections
Figure 7: Input Terminals (Ground Wire, N: Null line, L: Live wire)
Figure 8: Output Terminals (Negative electrode output, Positive electrode output)
5.2 Wiring Diagrams
CRITICAL SAFETY NOTE: Some users have reported that the output voltage pictograms on the unit might be reversed (positive indicated as negative and vice versa). Always verify polarity with a multimeter before connecting your LED strips or other devices to prevent damage.
Figure 9: Wiring Diagram for LED Strips
The wiring diagram illustrates three common connection methods:
- Directly to connect strip: A single LED strip connected to the power supply.
- One-Way Multiple strips: Multiple LED strips connected in parallel from a single output point.
- Two-Way Multiple strips: Multiple LED strips connected in parallel from two output points for more balanced power distribution.
For detailed instructions and additional diagrams, you may refer to the official user manual PDF: View User Manual (PDF).
6. Operation
Once the power supply unit is correctly wired to your LED strips and connected to an AC power source, it will provide a stable DC output. The unit is designed for silent operation. If using with a controller (e.g., for RGB LED strips), ensure the controller is compatible with the power supply's output voltage.
Video: Demonstration of the power supply unit connected to LED strips, showing color changes via a remote control.
Figure 10: Example Application with LED Strips and Remote Control
7. Maintenance
The MJJC Power Supply Unit requires minimal maintenance. Keep the unit clean and free from dust to ensure optimal heat dissipation. Do not block the ventilation holes. Avoid placing the unit in areas with excessive heat, humidity, or corrosive substances.
8. Troubleshooting
- No Power Output: Check all input and output connections. Ensure the AC power source is active. Verify the polarity of output connections (refer to the safety note in Section 5.2).
- LEDs Flickering: Ensure the power supply's wattage is sufficient for the connected LED strips. Check for loose connections.
- Unit Overheating: Ensure adequate ventilation around the unit. Reduce the load if it exceeds the power supply's maximum wattage.
- Incorrect Output Voltage: Verify the model number matches your required voltage (12V or 24V). If the output voltage is incorrect, and you have verified all connections, the unit may be faulty.
9. User Tips
- Verify Polarity: As noted in the safety section, always double-check the output polarity with a multimeter before connecting sensitive devices, as some units may have reversed pictogram markings.
- Voltage Accuracy: Users have reported that these power supplies provide accurate output voltages (e.g., 24V exactly, or 13V for a 12V nominal output on some 200W models, which is beneficial for LED strips).
- Silent Operation: The units are generally very quiet, making them suitable for noise-sensitive environments.
- Compact Design: Their thin and small size makes them easy to integrate into various setups, including tight spaces like bathroom mirrors.
- Heat Dissipation: The aluminum case provides effective passive cooling, keeping the unit cool even under load.
10. Warranty and Support
The MJJC Power Supply Unit comes with a 1-year warranty from the date of purchase. This warranty covers manufacturing defects under normal use. For warranty claims or technical support, please contact your retailer or the MJJC Official Store. Please retain your proof of purchase.