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Resistor colour code

Discussion in 'General Electronics Discussion' started by remzy, Dec 10, 2016.

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  1. remzy

    remzy

    47
    1
    Jun 12, 2015
    I've been dealing with fixing and making electronic projects for a few years now but my knowlege is still not perfect. I need help about this resistor. I just haven't ever seen this colour code on them before: Black, gold, silver, red and blue
    Here is a picture.

    OOMlWpl.jpg
     
    Last edited by a moderator: Dec 10, 2016
  2. Harald Kapp

    Harald Kapp Moderator Moderator

    11,268
    2,577
    Nov 17, 2011
    This may be an inductor, not a resistor.
    Inductance 0.62µH
     
    remzy likes this.
  3. hevans1944

    hevans1944 Hop - AC8NS

    4,592
    2,149
    Jun 21, 2012
    Or, if it really IS a resistor: 0.62 ohms. 62 is the two significant figures from blue and red bands, silver band means multiply significant figures by 0.01, gold band means 5% tolerance; ignore the black band.

    If it IS an inductor, as Harald mentioned, 0.62 μH is a quite small value. You may not be able to distinguish this component from a low-valued resistor.
     
    davenn and remzy like this.
  4. remzy

    remzy

    47
    1
    Jun 12, 2015
    I'm pretty sure it's a resistor because its marked as one on the pcb.
     
  5. hevans1944

    hevans1944 Hop - AC8NS

    4,592
    2,149
    Jun 21, 2012
    0.62 ohms might be hard to measure with a multi-meter. You could connect it to a constant-current source and measure the voltage drop to verify the resistance. No constant current source handy? Just wire it in series with a 100 ohm resistor and connect the series pair to a constant voltage source of about five to ten volts. Measure the voltage drop across the "0.62 ohm resistor" and use the voltage divider equation to determine the resistance.
     
  6. Harald Kapp

    Harald Kapp Moderator Moderator

    11,268
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    Nov 17, 2011
    An unmistakable sign.
     
    hevans1944 likes this.
  7. remzy

    remzy

    47
    1
    Jun 12, 2015
    I would've done that but the resistor is blown from the other side. I've just took a picture of it where you can see the colours clearly. I didn't know about that method. Thank you! :)
     
  8. davenn

    davenn Moderator

    13,798
    1,939
    Sep 5, 2009

    you read the colour code back to front ;)
     
    hevans1944 likes this.
  9. remzy

    remzy

    47
    1
    Jun 12, 2015
    I've realised that later on. Thank you :D
     
    davenn likes this.
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