Electronic – Combine Power Suplies

led strip

I'm not sure if this is the right place to ask, but I'm building something and am not sure about how to power it (I have zero electricity knowledge).

I'm building out three individually Gledopto controlled RGB+CCT LED strips for some shelf accent lighting, about 4m each.

The guide I read said that I'd need a 12V 3A transformer, but that's for just one strip+controller under 4m.

I want to run all three off the same power supply, so I don't have 3 bricks lying on the floor to hide.

Is it possible to just buy a larger power supply and add a splitter?

Does anyone have a recommendation on power supply size/type to enable me to split the power between all three controllers?

I just have no idea how to scale up power requirements.

Controller : https://www.aliexpress.com/item/GLEDOPTO-ZIGBEE-Led-Controller-Amazon-Echo-hue-lightify-tradfri-compatible-LED-controller-RGB-CCT-WW-CW/32858603964.html

LED : https://www.aliexpress.com/item/5M-LED-Strip-Light-RGB-CCT-RGBW-5050-SMD-Led-Tape-Non-waterproof-Led-Stripe-Bar/32879936721.html

Recommended Supply : https://www.aliexpress.com/item/1-x-AC-100V-240V-to-DC-12V-1A-2A-3A-5A-6A-8A-lighting-transformers/32672191071.html

Best Answer

Spec is 12W/M You have: 4M x 3.

so, 12*4*3 Watt Power Supply Unit is what you need. Ie 144W.

This considering 100% usage, you should allow some leeway, so 150W one should be good.

Connection is in parallel.

So the PSU you need is like this: https://www.aliexpress.com/item/power-supply-48v-150w-48V-3-2A-power-suply-150w-mini-size-led-power-supply-unit/891473321.html

Also, if you found a higher wattage (200W or 300W) that is cheaper, then feel free to use that instead.