| |||||||
| |||||||
High Quality OEM/ODM LED Strip Manufacturer
March 6, 2023 298
LED light strips are among the most popular LED products in the lighting market, playing an essential role in almost all lighting projects. However, the variety of light strip products and their different power ratings can leave customers wondering about the calculation of the power of these LED strips. In this guide, we will provide a comprehensive introduction to understanding and calculating the power of LED light strips.
The power of LED strips typically refers to the power consumption per meter of the strip. It's important to note that this is not the total power for a 5-meter strip, and we will delve into this distinction further.
LED strip suppliers often provide power ratings for different types, such as 3528 with 60 lights and 120 lights at 4.8W/m and 9.6W/m, respectively. For example, let's take a 5050 LED strip with 60 lights per meter at DC12V:
This calculation demonstrates that the theoretical power of a 5050 LED strip with 60 lights/meter at DC12V is 14.4W/m.
When comparing quotes from different suppliers for the same type and number of lamp beads, the power is often similar. However, taking a 2835 LED strip with 120 lights/meter as an example, the power varies under different voltages:
This demonstrates that, even with the same lamp beads and quantity, the power can vary based on the voltage.
The rated power represents the maximum current used in the LED strip and is not necessarily the actual power. Actual power is often lower in production to ensure long life and stable quality. Excessive power can lead to poor heat dissipation, potentially causing the strip to overheat and burn out.
Under suitable conditions for heat dissipation and without significant voltage drop, the power of LED strips can be adjusted within the rated power. Customization is possible, but it usually comes with minimum order quantity (MOQ) requirements.
The actual power of an LED strip is often lower than the rated power. To control power, the resistance of the strip can be adjusted. Calculating the resistance involves factors such as lamp voltage, bead voltage, bead current, and resistance number.
With the same configuration, the power of LED strips from different batches tends to fluctuate within a stable range, typically within plus or minus 10%. This fluctuation is normal due to variations in the Vf value of the lamp beads and the resistance used.
The convention of advertising LED strip power based on 1 meter is widely accepted in the market. It facilitates testing and reporting in an integrating sphere, ensuring accurate data for brightness and power. Advertised power for a 5-meter roll is not a simple multiplication of the 1-meter power due to voltage drop considerations.
Understanding and calculating the power of LED light strips involves considering theoretical calculations, variations in power under different conditions, and the difference between rated and actual power. Manufacturers often advertise the power of LED strips based on 1 meter for standardized testing and consumer comprehension. If you have further questions or need clarification, feel free to reach out to us. With 12 years of experience in LED strip production, we are here to share our expertise with you.
If you need assistance from professionals, feel free to contact us. We are here to provide you with expert help and support for all your needs. Don't hesitate to reach out to our team for personalized assistance and solutions. We look forward to serving you.
Our sales will reply to you within 2 hours.