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[Solved] Checking Diode 50W COB LED Functionality: Testing Polarity & Ensuring Proper Soldering

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  • #1 16709964
    piotrm169
    Level 10  
    I bought a Diode Led 50W cob how to check, how to check if it works? and how to check the polarity? where + and where -, there are signs on it but it has nothing to do with these soldering plates. yes, please.
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    • Checking Diode 50W COB LED Functionality: Testing Polarity & Ensuring Proper Soldering dioda led.jpg (2.15 MB) You must be logged in to download this attachment.
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  • #2 16709979
    Pedros050
    Level 43  
    Hello. Polarities you have marked minus at the top and plus at the bottom, everything can be seen in the picture :wink: Checking Diode 50W COB LED Functionality: Testing Polarity & Ensuring Proper Soldering
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    #3 16709995
    joda08
    Level 13  
    The picture clearly shows the +/- markings. Now, through the current limiting system, e.g. to 10 -100 mA (without a heat sink, it is easy to overheat the diode), connect the regulated power supply and slowly increase the voltage until the diode lights up (36 V or more depending on the diode structure).
  • #4 16710019
    piotrm169
    Level 10  
    But the cables are soldered to these plates on the left and on the right of this diode on my attachment, where is this plus?
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    #5 16710054
    Pedros050
    Level 43  
    @ piotrm169
    PITERRR wrote:
    Everything can be seen in the picture
    and another friend @ joda08 He explained to you that it must have cooling. And, like all diodes, it has one forward direction.
    And now so blatantly that it is clear where plus and where minus. Checking Diode 50W COB LED Functionality: Testing Polarity & Ensuring Proper Soldering
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  • #6 16710065
    piotrm169
    Level 10  
    PITERRR and did you even look at my picture? mark on my photo + on the shields where I should solder
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    #7 16710103
    Pedros050
    Level 43  
    Here you are. Checking Diode 50W COB LED Functionality: Testing Polarity & Ensuring Proper Soldering
  • #8 17303677
    piotrm169
    Level 10  
    Everything OK. I understood
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Topic summary

The discussion revolves around checking the functionality and polarity of a 50W COB LED diode. Users seek guidance on identifying the correct polarity for soldering, as the markings on the diode do not align with the soldering pads. Responses clarify that the diode has specific +/- markings, and it is crucial to connect it to a regulated power supply with a current limiting system to prevent overheating. Users are advised to gradually increase the voltage until the diode lights up, typically requiring 36V or more. Additional images are shared to illustrate the correct connections and cooling requirements for the diode.
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