12v to 3v

does anyoen have a diagram on how to convert 12v to 3v

for led's

what resistance resistor?

Hi,

 I am yesterday new to the group. I am just learning but I think a 9 ohn resistor might be correct. I have just started learning about LEDs they are cool. If you ran 3 leds in series each one would depending on the LEDs voltage which some are about 3 volts after lighting the 3 leds 3 volts would be left over and you would have 3 LEDs telling you the power was on. They wouldnt use much battery if it a car battery. Hope this helps

John

http://www.theledlight.com/ledcircuits.html

I didn't see the for leds at the end of your message. This link should clear it all up regardless of how many you want to hook up. Superchuckles is right I learned from his post. I think the 9 ohm would be for a device that uses 1 amp.

Thanks

John

Hi,

 You should have a 3v a 6v and a 9v tap between each LED like a voltage divider circuit I think. If I am wrong I dont mind being told so. I am always a student and if someone corrects me and they are right then I learned. And that is good.

Later