Choosing the right power supply for your LED modules can sometimes be a bit confusing. But don’t worry! In this guide, we’ll explain step by step how to select the perfect power supply so your LED module can work optimally.
1. What is a power supply, and why is it important?
A power supply is a device that provides the correct amount of current and voltage to your LED module. LEDs are very sensitive and require a specific amount of current (amperes) and voltage (volts) to function properly.
Using the right power supply prevents your LEDs from being overloaded or overheating. This ensures they last longer and perform at their best.
2. How do I know which power supply I need?
To choose the right power supply, you need to pay attention to two key specifications of your LED module: the voltage (volts) and the current (amperes). You can usually find this information on the packaging or in the manual of the LED module.
Steps to choose the right power supply:
- Check the current (mA or A): This is the amount of current the LED requires. It’s usually a constant value, such as 350mA, 500mA, or 700mA.
- Check the voltage (V): This is the voltage the LED needs to operate. For example, 18V.
- Check the power (watts): The power of the LED is calculated by multiplying the voltage (V) by the current (A). For example, an LED with 18V and 350mA has a power of 6W (18 x 0.35 = 6.3W).
Example:
For an LED module of 6W, 350mA, and 18V, you need a power supply that:
- Has a voltage range that includes 18V (e.g., 13-20V).
- Provides a constant current of 350mA.
- Can deliver at least 6W of power.
Note: A power supply often has a voltage and power range. Make sure the specifications of your LED fall within this range.
3. What if I want to connect multiple LED modules?
If you want to connect multiple LED modules, you need to decide whether to connect them in series or parallel. This affects the type of power supply you need.
- Series connection: The voltages of the LED modules are added together, but the current remains the same.
- Parallel connection: The voltage remains the same, but the currents of the LED modules are added together.
Example:
- Two LED modules of 18V and 350mA in series: You need a power supply that provides 36V and 350mA.
- Two LED modules of 18V and 350mA in parallel: You need a power supply that provides 18V and 700mA.
Pro-tip: We recommend always connecting LED modules in series. This is safer and prevents irreversible damage, which often occurs when the wrong power supply is used with a parallel connection.
4. What happens if I use the wrong power supply?
Using the wrong power supply can lead to several problems, such as:
- Overheating: The LED can become too hot and get damaged.
- Flickering: The LED may not work stably.
- Permanent damage: If the voltage or current is too high, the LED can break.
Always use a power supply that matches the specifications of your LED module. Carefully check these specifications before purchasing a power supply.
5. Tips for choosing a power supply
Here are some handy tips to help you choose the right power supply:
- Use a constant current driver: This type of power supply ensures that the current always stays within safe limits, which is essential for LED modules.
- Choose a power supply with slightly higher wattage: This prevents the power supply from being overloaded and extends its lifespan.
- Always check the specifications of your LED module: Make sure the voltage, current, and power of the power supply match the requirements of your LED.
- Opt for a series connection: This is safer and avoids common issues.
With this guide, you’re all set to choose the right power supply for your LED modules. Do you have any questions? Feel free to contact our customer service. We’re happy to help!