How many watts does a cob light strip cost per meter?

2024-07-26

The power of COB Light Strips is determined by its specific design, and the power of different COB light strips may be different. Generally speaking, the power of one meter of COB light strips is generally between 5 watts and 20 watts, and some brands have launched higher power COB light strips. Therefore, the wattage of a one-meter COB light strip needs to be based on the design parameters of the light strip.

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4 major factors affecting the power of COB light strips

The main reasons that affect the power of COB lamp strips are as follows:

The number and size of COB lamp beads: The power and brightness of COB lamp strips are related to the number and size of COB lamp beads. Generally speaking, the more COB lamp beads and the larger the size on the COB lamp strip, the higher the power and brightness.

Heat dissipation effect: The luminous efficiency of COB lamp beads decreases as the temperature increases. Therefore, the heat dissipation effect of COB light strips will affect its power and brightness. COB light strips with good heat dissipation effects can maintain stable power and brightness.

Driving current: The maximum power and brightness of COB lamp beads depend on their maximum driving current. The power and brightness of COB light strips are related to the driving current they are equipped with.

PCB board thickness and quality: The PCB board is the substrate of the COB light strip and will also affect its power and brightness. The better the thickness and quality of the PCB board, the better the current transmission and heat dissipation effect, and the higher the power and brightness of the light strip.

The power and brightness of COB lamp strips depend on the combined effect of multiple factors such as the number and size of COB lamp beads, heat dissipation effect, driving current, and the thickness and quality of the PCB board.

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How to calculate the power of COB light strip?

The power calculation of COB light strips needs to consider the following factors:

Voltage and current of each LED chip: There are usually multiple LED chips on the COB light strip. The voltage and current of each LED chip are different, so they need to be calculated separately, and then added together to get the power of the entire light strip.

The number and arrangement of LED chips: The number and arrangement of LED chips on the COB lamp strip will also affect the calculation of power. Generally speaking, the more LED chips, the greater the power.

Rated power of the driving power supply: The driving power supply used by the COB light strip will also affect the power calculation, because the rated power of the power supply is greater than the power of the light strip.

Based on the above factors, the power calculation formula of COB light strip is as follows:

Power = ∑ (Voltage of each LED chip × Current of each LED chip) × Number of LED chips × Arrangement coefficient

Among them, the arrangement coefficient is usually 1, which means that the LED chips are arranged in a linear arrangement.

It should be noted that the power calculation of the COB light strip can only be used as a reference. In actual use, factors such as the heat dissipation of the light strip and the matching of the driving power supply need to be considered to ensure the safety and stable operation of the light strip.