Dimmer for LED´s, PWM

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=59986
Printed Date: May 20, 2024 at 5:42 PM

Topic: Dimmer for LED´s, PWM

Posted By: duunari
Subject: Dimmer for LED´s, PWM
Date Posted: July 24, 2005 at 5:03 PM

I want to make dimmer something like this.

I am trying to drive this dimmer my car led gauge lights.

Can anyone tell where i can found schematic and component types and values?

I am trying to make lightning with 3-5 SuperFlux leds and couple of conventional 5mm super bright leds.

I put each led it´s own series resistor, calculated with 13.8v

Replies:

Posted By: Mad Scientists
Date Posted: August 06, 2005 at 3:32 PM

It depends on exactly how much power you need, but I think you could probably get away with using a variable resistor like the Radio Shack 25 ohm 3 watt unit # 271-265

https://www.radioshack.com/product.asp?catalog%5Fname=CTLG&category%5Fname=CTLG%5F011%5F002%5F011%5F000&product%5fid=271%2D265

Just wire it into the feed line to your LEDs.

Jim

Posted By: duunari
Date Posted: August 10, 2005 at 3:24 AM

So simple... posted_image

250 ohm 4w works fine... Thanks.

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