Testing a resistor ? - Team Camaro Tech
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post #1 of 4 (permalink) Old Oct 12th, 09, 05:25 PM Thread Starter
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Steve A.
 
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Testing a resistor ?

Tell me if I'm correct , I have a resistor on a piece of test equipment that has a silver band , orange band , blue band , green band . The silver means that it can vary + or - 10 % , the orange has a value of 3 , the blue has a value of 6 and the green has a value of 100,000 . So I take 36 x 100,000 and it is good for 3,600,000 ohms + or - 10% , if I put my test leads on both sides of it and my meter reads 0 the resistor is bad ? Does it make any difference when I test it if it's hooked up as long as no power is being supplied to it ? It has two other resistors on it that should be 100 ohms + or - 5% ( Gold ,brown,black,brown ) and they seem to check out at 102 ohms . Be patient with me I'm an electrical dummy .

Steve

68 work in progress , but I can drive it now - O5D build - 712 trim - 02 color
Think it was a 396 , 4 spd. - now in primer , 350 , 4 spd. , lots of new body and mech. parts

Last edited by flat350; Oct 12th, 09 at 05:36 PM.
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post #2 of 4 (permalink) Old Oct 12th, 09, 06:21 PM
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Alan
 
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Re: Testing a resistor ?

I would say 56K based on this chart:

http://www.elexp.com/tips/clr_code.gif

or this one:

http://www.hep.fsu.edu/~wahl/phy3802...color-code.gif

Make sure your meter is set to the scale that is greater than 56K. If it does indeed read 0, the resistor is shorted.

alan
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post #3 of 4 (permalink) Old Oct 12th, 09, 06:34 PM Thread Starter
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Steve A.
 
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Re: Testing a resistor ?

Alan

That sounds better , I was reading the bands in the opposite direction .


Thanks

Steve

68 work in progress , but I can drive it now - O5D build - 712 trim - 02 color
Think it was a 396 , 4 spd. - now in primer , 350 , 4 spd. , lots of new body and mech. parts
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post #4 of 4 (permalink) Old Oct 12th, 09, 10:16 PM
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Kev
 
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Re: Testing a resistor ?

To accurately measure the resistance, you'd want to remove power, unsolder one end so its not touching anything and then measure.
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