need help reading resistor values

wikusm

Sep 9, 2010
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Hi there, I am trying to repair a UPS i got from someone, problem is I cannot seem to calculate the value of these resistors using the colour codes? maybe im doing something wrong!

resistor.jpg
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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yellow, white, white, orange, brown?

499K 1%

resistor-color-code-all.gif
 

Resqueline

Jul 31, 2009
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If the colors are yellow, white, white, red, brown; it reads as 499 + 2 zeroes, 1%. (=49900 ohms.)
 

(*steve*)

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well, I was wondering if the last stripe was red or brown, and clearly Resqueline and I disagree on another band.

It's not clear on the image, but I imagine it will be clearer in real life :)
 

wikusm

Sep 9, 2010
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i believe its yellow white white red brown yes, thanks a lot! and thank you for the picture, will keep it for future reference :)
 

(*steve*)

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Sometimes the bands will make sense if read either way. The tolerance band is normally spaced a little further apart from the other bands.

In your image you can see it more clearly on some resistors than others.
 

Resqueline

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R49 does seem to be what steve was reading, and R110 was what I was referring to. Good lighting and a magnifying glass are good tools to make sure one gets it right.
Under poor lighting brown can be mixed with red, and red can be mixed with orange. Green & blue are also at risk of being mixed up, and sometimes violet & blue/grey.
The tolerance band sometimes also seems to be a tad wider than the rest.
 
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