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[LTSpice] Simulate Led Strip

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lfaborges:

--- Quote from: Zero999 on August 10, 2020, 12:16:11 pm ---
--- Quote from: lfaborges on August 10, 2020, 11:54:34 am ---
--- Quote from: Zero999 on August 10, 2020, 08:56:23 am ---
--- Quote from: lfaborges on August 08, 2020, 08:06:04 pm ---First thanks for everyone for the answers.

I need to make this led strip light up in a system that is powered by a constant current regulator (2.8A). I did some field tests and the input voltage was 7V.

I will still test the model proposed here in the forum and in the future I will give more answers.

--- End quote ---
Presumably your constant current regulator outputs DC? If so, then you made a mistake in your simulation by using an AC current source.

You need a constant voltage source, to power your LED strip. If it's 10W per metre and you're using 4.4m, then that's a total of 44W.

I = P/V = 44/12 = 32/3A

Swap the 2.8A constant current power supply for a 12V power supply rated to above 32/3A, so 4A or 5A will do.

--- End quote ---

The circuit in which I am going to install this LED, has this constant current source of 2.8A [AC]. So I said that it is something that I cannot change in the project.

--- End quote ---
Then you're out of luck. The LED strip is completely unsuitable for your power supply  |O

--- End quote ---

Don't say that haha ​​I need to find a solution  :scared:

Zero999:

--- Quote from: lfaborges on August 10, 2020, 03:00:44 pm ---
--- Quote from: Zero999 on August 10, 2020, 12:16:11 pm ---
--- Quote from: lfaborges on August 10, 2020, 11:54:34 am ---
--- Quote from: Zero999 on August 10, 2020, 08:56:23 am ---
--- Quote from: lfaborges on August 08, 2020, 08:06:04 pm ---First thanks for everyone for the answers.

I need to make this led strip light up in a system that is powered by a constant current regulator (2.8A). I did some field tests and the input voltage was 7V.

I will still test the model proposed here in the forum and in the future I will give more answers.

--- End quote ---
Presumably your constant current regulator outputs DC? If so, then you made a mistake in your simulation by using an AC current source.

You need a constant voltage source, to power your LED strip. If it's 10W per metre and you're using 4.4m, then that's a total of 44W.

I = P/V = 44/12 = 32/3A

Swap the 2.8A constant current power supply for a 12V power supply rated to above 32/3A, so 4A or 5A will do.

--- End quote ---

The circuit in which I am going to install this LED, has this constant current source of 2.8A [AC]. So I said that it is something that I cannot change in the project.

--- End quote ---
Then you're out of luck. The LED strip is completely unsuitable for your power supply  |O

--- End quote ---

Don't say that haha ​​I need to find a solution  :scared:

--- End quote ---
You need to use plain LEDs, designed to work off a constant current source.

Please post a schematic of the whole thing.

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