Professional manufacturer of customized LED light strips since 2012.
Do Low-Voltage COB LED Strips Flicker? In-Depth Analysis of Flicker Causes, Detection, and Solutions
Flicker refers to the rapid brightness fluctuation of a light source caused by current variations. Prolonged exposure to flickering light may lead to visual fatigue, headaches, and other issues, and can even affect photography and video recording. According to the international standard IEEE 1789-2015, flicker frequency must be higher than 3125Hz or the fluctuation depth must be below 8% to be considered safe and flicker-free.
Traditional LED strips are prone to flickering due to poor-quality driver power supplies or circuit design flaws. However, low-voltage COB LED strips themselves are not a direct cause of flickering. Whether flickering occurs depends on the following key factors:
(1) Driver power supply quality: Low-quality constant-current drivers can cause current fluctuations, leading to flickering.
(2) Dimming method compatibility: If PWM dimming operates at too low a frequency (e.g., <200Hz), it may produce visible flickering.
(3) Circuit design: Poor impedance matching or unstable voltage may amplify flickering effects.
Shenzhen JOMO Lighting employs customized driver solutions and COB integrated packaging technology to ensure stable current output in LED strips, reducing the risk of flickering at the source.
(1) Smartphone Camera Test: Use a smartphone to record the LED strip. If rolling stripes appear in the footage, flickering is present.
(2) Professional Instrument Testing: Measure the fluctuation depth and frequency directly using a flicker meter (e.g., LUXEON Flicker Meter).
(3) Visual Inspection Method: Quickly wave a finger near the light source—if a ghosting effect appears, low-frequency flickering may exist.
4. JOMO Lighting's Flicker-Free Solution for Shenzhen
To address the issue of flickering, our company ensures the stability of low-voltage COB light strips through the following technologies:
· High-Quality Constant Current Driver ICs: Utilizing drivers from brands like TI and MeanWell to guarantee output current fluctuation ≤3%.
· High-Frequency PWM Dimming Technology: Dimming frequency increased to over 4000Hz, completely eliminating visible flicker.
· Optimized PCB Circuit Design: Reducing impedance interference through multi-layer board layout to match COB chip characteristics.
· Full-Voltage Compatibility Solution: Supports 12V/24V wide-voltage input, adapting to complex power environments.
According to third-party laboratory tests, the Flicker Index of Jomo Lighting's COB light strips is below 0.05%, complying with global mainstream safety certification standards (CE, UL, TUV).
5. How to Choose Flicker-Free Low-Voltage COB LED Strips?
(1) Check Driver Specifications: Opt for drivers labeled "flicker-free" with constant current functionality.
(2) View certification label: Priority should be given to products certified by TUV Eye Comfort or Flicker Free.
(3) Choose Professional Brands: Shenzhen Jumei Lighting offers free samples for testing and technical consultation, supporting customized solutions.
Conclusion
Whether low-voltage COB LED strips flicker depends on the level of technology and craftsmanship. Shenzhen Jomo Lighting Technology Co., Ltd. has been deeply rooted in the LED industry for 10 years, offering high-stability, flicker-free lighting products through self-developed COB packaging technology and intelligent driver solutions. For more technical details or to request samples, please visit our official website or contact our engineering team.
Email: jomolighting@jomolighting.com