can u make a 2 wire led as brite as a 3
Printed From: the12volt.com
Forum Name: Lights, Neon, LEDs, HIDs
Forum Discription: Under Car Lighting, Strobe Lights, Fog Lights, Headlights, HIDs, DRL, Tail Lights, Brake Lights, Dashboard Lights, WigWag, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=107162
Printed Date: May 28, 2024 at 8:45 PM
Topic: can u make a 2 wire led as brite as a 3
Posted By: metal_mulisha
Subject: can u make a 2 wire led as brite as a 3
Date Posted: September 01, 2008 at 7:33 PM
Is it possible to make a 2 Wire Led Light as Bright as a 3 wire? I picked up a set of led strips im using for turn signals, and they are 3 wire. The white wire is normal I guess and the red wire is like 2 or 3x brighter. I also picked up a set of 2" LED Marker lights, but they are only 2 wire, and are just as bright as my led strips in the normal state... I want to know if I can either turn it into a 3 wire, or some how atleast make it just as bright as a 3 wire led... Anybody have any ideas? And I would just go buy a 3 wire light, but I couldnt find any. Thanks.
Replies:
Posted By: megaman
Date Posted: September 02, 2008 at 9:18 AM
The two diiferent wires have two different resistances to control the current. Higher resistance, less current, less bright. Lower resistance, Higher current, brighter LED's.
Posted By: metal_mulisha
Date Posted: September 04, 2008 at 12:40 PM
Okayyyy, so how do I turn a simple LED with 1 positive & 1 Negative, into 2 positives ( High & Low Resistance ) and a ground wire? Each Light has 9 individual LEDS inside of em.
Posted By: reax222
Date Posted: September 04, 2008 at 2:04 PM
As far as I know, LEDs operate in a narrow voltage range. Meaning if the circuit is to receive 12v, it will either have to divide the voltage across all the LEDs or it must reduce the voltage before it gets to the LEDs. I would guess the 9 LEDs are in series and each LED sees only 1.33v. If you reduce the voltage to 10v, each LED will see 1.11v. If they would still light would be the question.
I don't know enough about voltage dividing yet to say for sure, but I would think you would have to put in a resistor inline. I might experiment with a pot before trying resistors, or you can get the resistance of the lamp and figure it out with ohms law.
Posted By: megaman
Date Posted: September 04, 2008 at 2:48 PM
The LED's would not be in series. If one went out, they would all go out. In a parrallel configuration, you can use different resistances to get different brightness levels. As far as the circuit goes, there's many ways to skin a cat.
Posted By: metal_mulisha
Date Posted: September 07, 2008 at 1:54 AM
Sounds too confusing for me. Hahaha,, think I might ust live with the 2 wire, lol thanks tho.
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