[C_J_GO]

I have these strips under my cabinets for lighting. The problem is they are too bright (we are wanting a low light effect rather than work light). I have a DC 12v 1m transformer powering them, but I am thinking a potentiometer inline would allow me to dial in the exact brightness without having to figure out exact resistance. I have different lengths of these running as some of my upper cabinets are next to each other and I can daisy-chain them, and some are short cabinets with a 24" string on them; thus I figured a potentiometer at each transformer would allow me to dial them in.

First question, is this doable?
Second, how do I figure out what ohm potentiometer should I need?

Thanks,
Jay

 

[dmxtothemax]

Its not just as easy as using a pot.
As most pots don't have the power
Rating required .
Better off using
A adjustable power supply.
Or a wall wart with adjustable
Output voltage.

 

[ER2]

I have these strips under my cabinets for lighting. The problem is they are too bright (we are wanting a low light effect rather than work light). I have a DC 12v 1m transformer powering them, but I am thinking a potentiometer inline would allow me to dial in the exact brightness without having to figure out exact resistance. I have different lengths of these running as some of my upper cabinets are next to each other and I can daisy-chain them, and some are short cabinets with a 24" string on them; thus I figured a potentiometer at each transformer would allow me to dial them in.

First question, is this doable?
Second, how do I figure out what ohm potentiometer should I need?

Thanks,
Jay

Instead of guessing contact the manufacturer and ask how to dim the lights.

 

[Oso954]

Contacting a Chinese Mfg for product support is often wishful thinking.

I also doubt whether those LED strips are NRTL listed for that use.

 

[ER2]

Contacting a Chinese Mfg for product support is often wishful thinking.

I also doubt whether those LED strips are NRTL listed for that use.

Did he say they were manufactured in China? Don't know what NRTL is but if they ain't UL listed they prolly shouldn't be installed.

 

[C_J_GO]

Just to update, I finally got around to installing a new power suply, one that gave me different preset voltages (3,4.5,6,7.5,9, and 12). It was nice to switch in between the voltages to see the exact effect of it on the LED's. I ended up using 9 volts at 1 amp.

Thanks for all the replies.

On a side note, if you are looking at doing something similar, there are some kits out there to build your own power supply that is fully adjustable (not just using the preset values like on mine) and you could even fine tune the brightness even more.

 

[dmxtothemax]

Good to hear !