Should I use an ebay step-down module to get the voltage from a laptop power supply to 12V?

Thread Starter

FranciscoB

Joined Feb 8, 2014
23
I'm looking to replace the old fluorescent bulb lighting of my small aquarium (10 liter). Led strips are readily available and I have a 16V Asus laptop power supply with a broken connector. I would like to ask if I can use one of these modules to step it down to 12V:

http://www.ebay.com/itm/1pcs-1-23V-...dule-LM2596-Power-Supply-Output-/400985220074

I already have one of these LM317 circuits. Could it be used instead?

Led Strips (I would not be using the whole 5M, maybe 4 sections of 40cm positioned side-by-side but in series):

http://www.ebay.com/itm/5M-300LEDs-...-Lights-Super-Bright-Waterproof-/231472954932

Power Supply:

http://www.ebay.com/itm/19V-AC-Adap...452904?hash=item43d337b7a8:g:rpgAAOSwiCRUc~U4

Thank you in advance
/F
 

dannyf

Joined Sep 13, 2015
2,197
Get a sense of the current consumption of the LEDs. If it causes significant dissipation over the lm317 (5w or more), I would consider alternatives.

Also, understand how the LEDs should be powered.
 

Thread Starter

FranciscoB

Joined Feb 8, 2014
23
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