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Forum Index : Electronics : 4.5v led to 12v whats needed

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sacongo

Newbie

Joined: 01/02/2008
Location: United States
Posts: 2
Posted: 05:17am 26 Mar 2008
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I would like to connect a 4.5V 48 led light (3 AA batteries) to a 12V system i have a few of the lights i was thinking hooking up three in series to get it to 13.5v but i know led need correct polarity to work so im thinking it wont work? I read hear about a resistor will work and if so what type had how to hook it up. Can anyone shed some light on this, im not to good with electrical stuff. I can attach a pic of the inside if needed. Edited by sacongo 2008-03-27
 
Gizmo

Admin Group

Joined: 05/06/2004
Location: Australia
Posts: 5078
Posted: 07:03am 26 Mar 2008
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Hi sacongo

Connected three in series should work fine. Or you could use a dropping resistor. Even better you could most likely get away with a little LM7805 regulator. But first up we need some more infomation. Could you post a picture?

Really what we need to know is the current draw.

Glenn
The best time to plant a tree was twenty years ago, the second best time is right now.
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sacongo

Newbie

Joined: 01/02/2008
Location: United States
Posts: 2
Posted: 02:33am 27 Mar 2008
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Ok here a picture, If i can connected three in series i think thats the way to go.



 
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