Help with resistors

GM50 4164 Jun 26, 2017

  1. GM50 4164

    GM50 4164 TrainBoard Member

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    I'm trying to wire up I'm thinking 603 leds for headlights. These leds came from China and had a resistor already attached but burnt out after turning on function 0. I am using Loksound Select Micro and am trying to find out what kind of resistors I need to use. Smaller size would be nice but I know nothing about them. Like, nothing at all.
     
  2. Greg Elmassian

    Greg Elmassian TrainBoard Member

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    There are a number of nice, lengthy explanations on the web, honed and improved over the years. Google is your friend.

    Other recommendation, be sure to use a LED resistor "calculator" that also checks wattage needed.

    Greg
     
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  3. sachsr1

    sachsr1 TrainBoard Member

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    I use 1/4 watt resistors on my led lights. You can get assortment packs of 100's of resistors for a few bucks on eBay. I've used 1K to 10k resistors on LEDs in my locos, but you'll want to use an online resistor calculator. A trick I started to use is to solder up some variable resistor tester. I adjust them until I'm happy with the brightness, check the resistance, and then use a fixed resistor. Here's a few links, but they are all over Amazon and eBay. I think I have literally 1000's of resistors and LED's around the house with about $20 total investment.

    Variable:
    http://www.ebay.com/itm/White-Blue-...181677?hash=item41c5d89cad:g:g-UAAOSwtGlZJVbf

    Fixed:
    http://www.ebay.com/itm/New-300Pcs-...358853&hash=item3ade23c386:g:VR8AAOSwax5YoQ~D
     
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  4. lexon

    lexon TrainBoard Member

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  5. GM50 4164

    GM50 4164 TrainBoard Member

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    Thank you for all of your help. I've ordered some 1k and 2k resistors and will mess around with them once they arrive.
     

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