Author Options:

12v power supply for 3 circuits? Answered

hi there

I'm trying to build my first led project and found a led dimmer circuit somewhere on the internet, I need to build 3 dimmer circuits, one for red led dimming, one for blue and one for green but i want to use a single power supply for all three, each dimmer needs 12v to run and I only have one 12v power supply, how can i wire the circuits in order to use the only supply i've got?

this is the dimmer i will build to run 20 led's, the led array draws very little current, less than 175 mA

any help or ideas welcome





Best Answer 9 years ago

Just tie the supply to each of your circuits, in parallel. No problem, provided it can supply 3 x 175mA, you're good to go.


9 years ago

thanks a lot, now i'm good to go buying the parts, if my project works i'll make an instructable for it, again thanks