Wiring led's

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winston_smith

Member - Posts: 41

Joined: November 17, 2004

Posted: December 17, 2004 at 5:15 PM / IP Logged

Ok well i think i have this figured out.

So i have 3 3.5V led's i wire them in series = 10.5V(E) so voltage drop is 1.5 (E). So i take 1.5 (E) and divid by (I)in this case 20mA so .020, and i get 75Ohm resistor.

Or if i wire 4 3.5V led's in series that should be fine also right? And about fuses an led should act pretty much like a fuse on it's own right?

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Carbonb

Copper - Posts: 113

Joined: October 09, 2004

Location: United States

Posted: December 18, 2004 at 1:15 PM / IP Logged

No, you still need to use a fuse, or I would just tie it into a pre-exsisting fuse.

You don't want to burn out your LED's just put them on a fuse load.

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Poormanq45

Silver - Posts: 597

Joined: October 27, 2004

Location: United States

Posted: December 18, 2004 at 4:54 PM / IP Logged

Be careful. You need to either make or buy a voltage regulator. A 12 volt LED can not handle a 14+ volt current, 14+ when car is running.

The LEDs will burn out if they are kept on for a period of time with a 14+ volt current through them.

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Wiring led's

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