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Old 10th September 2005, 06:34 AM   #1
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Default capacitor leads trouble

I have the radioshack 100F 35V 20% Axial-Lead Electrolytic Capacitor for a preamp im makig. i cant tell which side is the posative and negative. it has aarows pointin towards a side(each lead somes out of the sides, the circle part of the side) but idk if its negative 100% or not. it looks like inside the aarow it might be a negative sign but it might just be a block inside hte aarow. any help would be appreciated
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Old 10th September 2005, 06:38 AM   #2
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I assume you are talking about the type of capacitor below:

Click the image to open in full size.

In this case I beleive that the arrow is pointing in the direction of the negative lead, but don't take my word 100% on it. Maybe some others will know for sure.
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Old 10th September 2005, 06:46 AM   #3
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yes tahts the one but the aarows look different on mune, they are solid and mashed together. i saw that picture on radioshack.com.
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Old 10th September 2005, 06:50 AM   #4
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Ok, here you go. The site below says that with axials the arrow always points in the direction of negative terminal.

Electronics:Component Identification

You should be all set now.
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Old 10th September 2005, 07:01 AM   #5
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thanks alot, now i just need to go get a 820ohm resistor tomorrow and ill be set with this preamp circuit im building
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