Resistor colour code

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gregmcc

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#226323 1-Jan-2018 20:53

So I have a electronic gadget "Socket and See" fuse circuit locater

so there are some obvious failures, amongst them are a couple of resistors

I'm not 100% sure on the value of the resistors, my take on it is 0.47ohms with 5% tolerance----if I was using a 4 band resistor (ignoring the black band)

Using a 5 band chart it doesn't work out.

So has anyone got any suggestion on what the black band represents?

Technofreak

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#1927777 1-Jan-2018 21:19

I don't think it matters. For most applications the tolerance doesn't matter too much either, the wattage is more important. For that sort of resistor the physical size is your guide to wattage. Buy one the same size generally.

Whip down to Jaycars and get a 0.47 ohm resistor and you'll be good to go.

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geocom

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#1927799 1-Jan-2018 22:19

https://en.wikipedia.org/wiki/Electronic_color_code

Looks like it could be the military spec referring to failure rate so really it should be of no consequence ignoring it.

Geoff E