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Thread: Help for the colour blind

  1. #1
    Join Date: Apr 2016

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    I'm Chris.

    Default Help for the colour blind

    Can anyone read off the value of this resistor for me please.
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  2. #2
    Join Date: Jan 2008

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    Not the best photo in the world, but from here it looks like 100Kohm +/-1%.
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  3. #3
    Join Date: Apr 2016

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    Quote Originally Posted by Filterlab View Post
    Not the best photo in the world, but from here it looks like 100Kohm +/-1%.
    Excellent, that’s what I remembered when I bought them 4 years ago. All paperwork is long gone ��

    I have a passive 23 step resistor volume control and this is the shunt resistor. At present, having changed my power amp I am having to wind the volume pot nearly fully up for normal listening. So I will change the shunt resistors, but at about 20 a channel they are a bit too expensive to experiment too much.

    Am I right in saying that a reduction from 100kohm to say 47kohm will give a worthwhile increase in volume at any step. I think I am remembering that the PVC had a shunt resistor of 15kohm when I bought it but at the time it was too loud at just one quarter up.
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  4. #4
    Join Date: Jan 2009

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    I'm openingabottleofwine.

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    The resistor shown has 5 colour bands. Conventionally resistors have only 4 bands: three denoting the resistance and the fourth the percentage tolerance.

    So for a 100K +/-1% resistor the colour coding, starting from the end of the resistor body nearest the lead-out wire, would be:

    brown, black, yellow, brown. (10 x 104 Ohms, 1%)

    Your resistor replaces the third band with two bands (black and orange), which I presume means 100 x 103 Ohms. It is not a convention I have ever seen before.

    If in doubt just measure the resistor with an ohmmeter.
    Barry

  5. #5
    Join Date: Apr 2016

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    Quote Originally Posted by Barry View Post
    The resistor shown has 5 colour bands. Conventionally resistors have only 4 bands: three denoting the resistance and the fourth the percentage tolerance.

    So for a 100K +/-1% resistor the colour coding, starting from the end of the resistor body nearest the lead-out wire, would be:

    brown, black, yellow, brown. (10 x 104 Ohms, 1%)

    Your resistor replaces the third band with two bands (black and orange), which I presume means 100 x 103 Ohms. It is not a convention I have ever seen before.

    If in doubt just measure the resistor with an ohmmeter.
    Thanks Barry

    Its an Audionote Tantalum 2w non magnetic. They do like to be different!

    I tried measuring in circuit, but I know from the past that this can give errors

    Cheers Chris
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  6. #6
    Join Date: Jul 2009

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    Hmmm, from the somewhat small and blurry photo, to me that looks like a standard 5 band resistor with colours that are Brown, Orange, Black, Black and Silver. (Silver being the tolerance band which is always spaced further away from the others)

    Which means that one is 130 Ohms +/-10%

    If the silver is actually grey then that makes it a 0.05%
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  7. #7
    Join Date: Feb 2013

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    yeah i'd say 130 ohms as well
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  8. #8
    Join Date: Mar 2014

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    I'm malcolm.

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    Quote Originally Posted by struth View Post
    yeah i'd say 130 ohms as well
    Same here
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  9. #9
    Join Date: Jan 2008

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    Ahh, may be. It looks brown to me at the end, but I wasn't quite sure.

  10. #10
    Join Date: Apr 2016

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    OK

    I hope this is better

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