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Old 09-23-2006, 03:20 PM   #1
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Default need electronics help

not sure if this is the right area so mybad if its not.

ok the amp in my car took a poop. well i need a 47 ohm resitor. but do i need a 1/4 watt, 1/2 watt or 1 watt resistor..... how do i tell the diff between wattage????? i figured out the ohm by taking the amp meter to the other ones.. (theres on resitor for each channel on a 4 channel amp) but im lost on the wattage part.. also if just one resistor blows will it make the whole darn thing quit working???

the color codes are yellow, purple, black with gold at top +/- 5%

the resistor is about as long as a cancer stick is round. so about hmmm 1/4 inch
thanks
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Old 09-23-2006, 04:04 PM   #2
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well yellow, purple, black indicates 47 ohms at +/- 5%

1/4 inch long makes me think 1/4 watt. but hopefully someone else will chime in with that info.

how big around (diameter) is it?
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Old 09-23-2006, 04:07 PM   #3
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about 1/8 inch.... just by looking at it.. i would say diameter is about half the length
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Old 09-23-2006, 04:10 PM   #4
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well radio shack has 1/4 watt and 1/2 watt in stock so.... ill just go check out that they have and compair them together... 99 cents for 5 of them... beats 99 cent for 5 of them off ebay plus 3$ shipping... wtf oh well off to radio shack i go... well in about an hr or so..
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Old 09-23-2006, 04:10 PM   #5
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your length leads towards 1/4 watt and your width leads to 1/2 watt.
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Old 09-23-2006, 04:13 PM   #6
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its just a lil bit smaller then the 1/4 watt on the screen but then agian if i has a 12" monitor i would prob be the same size as the 1/2 watt but the thingie is the tan color one. not the blue one.

if i only knew where my calipers are at...... oh well thanks alot!!!!
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Old 09-23-2006, 04:17 PM   #7
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measuring it up against a monitor really is not a good way of doing it at all.

I would find a ruler and measure a bit more
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Old 09-23-2006, 05:08 PM   #8
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oh ya i know..... im still trying ot find my calipers no luck but... i have a tape mesure!!!
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Old 09-23-2006, 05:13 PM   #9
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now this is with a tape measure so..... nothing is 100% but it measure ABOUT 1/4 inch long and about 1/16 round.... oh ya btw the pic above the .25 watt one is about 4 times the size of my resistor on my moms monitor... hahahaha 21 inch monitors rule...
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Old 09-23-2006, 05:14 PM   #10
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well 1/16 of an inch is 1.59mm
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