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LED Electronic Resistors

LED Electronic Resistors

Andy G asks this:

“I have a few 3 volt street lights (LED) that came with separate resistors. Does anyone know how to wire resistors to lights? Thanks in advance.”

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4 Responses to LED Electronic Resistors

  • phil johnsonsays:

    I don’t think it makes any difference. I normally attach mine to the negative wire on my signals and + on street lights

  • Kevin Chingsays:

    Resistors should always be wired to the + side of the LED this will make them last longer they do not like the full voltage on the cathode the resistor is there to limit the current flow.

  • Peter Pococksays:

    Also, adding to a previous comment, if the LED does not light up then swap the Leeds! If you’re using a 12 volt supply I find a 1K (1000 ohms) resistor is good place to start. If you want less brightness, then try anything up to 5K. Quarter Watt resistors will be fine. Bigger, or higher wattages only take up space!
    A small, cheap set of clip on Leeds is a quick way of connecting things up until you have things working, then solder up the various wires etc.

  • Sundaramsays:

    Please go to the internet and Type “LED current limiting resistor”. This site gives you various sub contents where one can get the resistor with value that needs to be connected for a Parallel or series LED circuit. One particular site allows to enter the values of current consmed by the LED, the input voltage and the no. of LEDs and it calculates the ressitor value to be used and also the schematic diagram of the circuit if required. Hope this helps.

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