12V LED Strips in Series with a 24V Power Supply?

This is an old post, but i just wanted to contribute my observation. Both your parallel and series would work, however that is if we assume that none of the LEDs would ever burn out.If half of the leds on the 24V would have burned out on the left side (see image).

The result would be catastrophic because the remainder leds on the burned side would receive an increase in voltage (about 16 V) and on the right side the voltage would drop to about 8V.In conclusion, as the led burn out the voltage increases on the same parallel side and if your LEDs are rated at 12V it would be just a matter of time until all lights in the same parallel burn out due to high voltage.That is why it is recommended to always connect led strips in parallel.

I am purchasing 50x - 1Meter / 12V / 72 LED /Rigid SMD 5730 strips directly from china. I don't know the LED manufacturer, nor the resistor being used. (yes, this is a gamble)

The strip is one that could be cut at every 3rd led. So, it seems that every 3 LEDs is wired in series, and there are 24 groups of 3 wired in parallel.

Each strip is specked out at 12V/18W. I would like to take 2 strips, and wire them in series with a 24V 18W power supply.

(By series, I do not mean chaining them in parallel and calling it series like the billion articles polluting my google searches)

My question is, can I wire two 12V strips in series using a 24V power supply? It seems like I can, but am worried I am overlooking something that I don't even know to ask, or I do not have enough information without the LED spec sheet.

Thanks!

·OTHER ANSWER:

I am purchasing 50x - 1Meter / 12V / 72 LED /Rigid SMD 5730 strips directly from china. I don't know the LED manufacturer, nor the resistor being used. (yes, this is a gamble)

The strip is one that could be cut at every 3rd led. So, it seems that every 3 LEDs is wired in series, and there are 24 groups of 3 wired in parallel.

Each strip is specked out at 12V/18W. I would like to take 2 strips, and wire them in series with a 24V 18W power supply.

(By series, I do not mean chaining them in parallel and calling it series like the billion articles polluting my google searches)

My question is, can I wire two 12V strips in series using a 24V power supply? It seems like I can, but am worried I am overlooking something that I don't even know to ask, or I do not have enough information without the LED spec sheet.

Thanks!

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