So i’m repairing a led light, can’t find an identical replacement. it has a 36v 300mA constant current power supply that runs 3 strips of LEDS in series. each strip has (6) 3030 LEDS in a 2S3P layout. The LEDS strips have no other components on them. My question is, could i replace them with ones that have a VF of 6V and 150mA? or am i looking at it wrong? Or what LED specs should i be look at?
Hello,
well if I am counting right, you say your LED chips have a forward voltage og 6V at 150 mA. If you were to repace the original ones with those (and thus keep the original arrangement) you would have 2S3P LED array with forward voltage of 12 V (2*forward of one LED, since they are in series) and current of 450 mA (3 LEDs in paralell). Three arrays in series would give you a forward of 36 V, but at 450 mA, thus the original PSU could not be used. But if you, for example, were to only populate two paralell rows (Thus you would have a 2S2P cell) in each strip, you would have one cell of 12V, 300 mA and thus whole arrangement of 36 V, 300 mA. This way you could reuse the original power supply, but the question stays: what would the light output be like.
Hopefully this makes sense to you and will be any useful.
I wish you luck.
@honzam Thanks, it does. Light output is negligible. The wife just wants the same fixture. lol