How To Calculate Power Consume Of LED Flexible Strip

Feb 14, 2023

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  Calculate the power supply required for your new LED strip lights, First you need to know:

1. Length of the strip or tape

2. Number of LEDs per meter

3. Power consumption per LED

 

To calculate the size of power supply (in Amps) you need to multiply the length of the LED tape by the number of the LEDs per meter and then multiply this by the power of the LED (0.08w to 0.24w per LED are typical values). Then divide the value by 12 volts to calculate the required Amperage of the power supply.

 

(Length of LED Strip x LEDs per Metre x LED Power) / 12

 

We recommend you add at least 10% to the calculated value to allow for resistance and losses in the cables. You would also need to allow for any possible expansions or additions in the future. Most LED Strip Lights can have additional sections added using joining cables.

 

Calculation Examples:

 

Example 1: A 5m roll of SMD3528 (0.08w) with 60LED/m would be: (5m x 60 x 0.08) / 12 = 2amps +10% = 2.2Amps.

 

Example 2: A 5m roll of SMD5050 with 60LED/m would be: (5m x 60 x 0.24) / 12 = 6amps +10% = 6.6Amps.

 

If you have any questions,Please let me know.

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