September 7th, 2010
admin
Where can I find battery operated LED lights?
I’m making an outfit to wear to a concert and I need to know where I can find battery operated LED lights. They can either take 3-12 volt or A-D batteries. Help!?!?!
sounds like something you need to make yourself.
Ohm’s Law says:
E = I x R
You need to find the specs for the LED you want to use. This will give you the maximum voltage per LED.
Once you have the voltage, the spec sheet will tell you the forward current for maximum brightness.
Now you have the voltage and the current.
Using the voltage (E) and the current (I) you can calculate the resistance (R)
That is per LED. Now you can wire them in series/parallel until they equal your supply voltage.
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