Hi everyone,this is my first post and don’t know where to put it so bare with me. I have 6 solar lights that don’t work anymore and wanting to rebuild them. My plains are to add leds to them and wire them all together with one DC power supply. I have no idea though on what is needed and what way to do it.
Here are my questions and pictures of what I want to use.
1>>Do they need to be wired in Series or Parallel Circuits so they will all have the same brightness.
2>>Will I need to use resistors on each light and if so what size would I need.
3>>What size power supply would I need to run them all. I have 2 supply’s shown in the pictures.
The first power supply is 12VDC 1000mA.
Second supply 12VDC 25A.
Thanks to everyone for your help.
“Solar lights” as in the 1-LED jobbies that just glow to “light up” a path, I take it?
They barely draw 20mA each at ~3V or so, so they’re not a strain on anything.
6 of ’em won’t light up if wired in series, so you can wire up 2 sets of 3-lights (ie, ~9V each one).
Easier, though, would be to just feed each LED 12V through a resistor, all of them in parallel, even though that’s a bit wasteful (3V as light, 9V burned away as heat in the resistor).
So, for 20mA each, that’s 12V / 0.020A or roughly 600Ω.
I think I am using about 22 gauge wire and from first light to the last one is about 35’.
So it would look something like this plus the rest of the led’s.
)
