SOT: electrical gurus check in..., how to dim LEDs? |
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SOT: electrical gurus check in..., how to dim LEDs? |
dlo914 |
Nov 30 2012, 12:45 AM
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#1
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Whatchu' lookin' at?!?! Group: Members Posts: 3,432 Joined: 6-September 04 From: San Gabriel, CA Member No.: 2,697 |
So i've retrofitted some LED rings into my daily driver, but i'm only using the LEDs as the running lights and using the filament bulb when brakes are applied. how would i go about using the LEDs for both running and braking light usage? i know i'm suppose to add a resistor to each positive LED wire, but i'm so confused as to what OHM rating or % etc i'm suppose to use. The guys at two radioshacks were useless.
Here's how they look at the moment: (IMG:http://www.914world.com/bbs2/uploads_offsite/i62.photobucket.com-2697-1354257938.1.jpg) |
Bartlett 914 |
Nov 30 2012, 08:33 AM
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#2
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Advanced Member Group: Members Posts: 2,216 Joined: 30-August 05 From: South Elgin IL Member No.: 4,707 Region Association: Upper MidWest |
I am doubtful that adding resistance will give satisfactory results. You need to pulse the lamp. By varying the duty cycle, you will dim the LED
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