Electronics > Projects, Designs, and Technical Stuff
[LTSpice] Simulate Led Strip
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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