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Forum Need to replace resistor 900 ohms / % Tolerance
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Related

Need to replace resistor 900 ohms / % Tolerance

Alex-andre
Alex-andre over 2 years ago
Hello there,

I need to replace this resistor which appears to be a 900 ohm with a % tolerance. (4 rings = Black / White / Red / Silver or Grey and around 25mm long)

I bought one with almost same features (OHMITE OX102KE Through Hole Resistor, 1K ohm, OX, 1W, ±10%, Axial, 300V) but it doesn't fit, it's far too small compare to the one I need to replace. Do you have any suggestion where to buy or how to replace it ?

I attached a picture below.

Thanks a lot

Aleximage
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Top Replies

  • jw0752
    jw0752 over 2 years ago in reply to dougw +5
    Hi Doug, I'm doing good. Glad to see so many old friends still around.
  • jw0752
    jw0752 over 2 years ago +3
    Based on my experience with this style relay it is highly probable that the resistor is across the Normally Open relay contacts and serves as a soft start to the load. As configured it would current limit…
  • Gough Lui
    Gough Lui over 2 years ago +1
    Do you have any information about the power rating? As long as the power rating of the replacement is the same or greater than the original, it doesn't really matter that it is physically smaller. You…
Parents
  • michaelkellett
    0 michaelkellett over 2 years ago

    The original resistor doesn't look like 900R to me. It looks like Black, White, Red which is 1900 ohms.

    It looks as if it has got hot, but how do you know it has failed ?

    What resistance does it measure ?

    Do you have the schematic and parts list with values  for the board - without those thingsmay go badly wrong.

    MK

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  • Alex-andre
    0 Alex-andre over 2 years ago in reply to michaelkellett

    thx for your reply, I don't have the schematic and parts list unfortunately.

    about the ohms,don't you see 4 rings ? why do you think there is only 3?

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  • Alex-andre
    0 Alex-andre over 2 years ago in reply to michaelkellett

    thx for your reply, I don't have the schematic and parts list unfortunately.

    about the ohms,don't you see 4 rings ? why do you think there is only 3?

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  • dougw
    0 dougw over 2 years ago in reply to Alex-andre

    The first 3 bands indicate value, the last band indicates tolerance - in this case silver = 10% tolerance on the resistor value.

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