Capacitor Question

Ghost2520 · Post by **Ghost2520** » Thu Mar 16, 2006 8:45 pm

Sorry for making another thread for this, but no one was reading the question posted awhile back in my other thread and I need an answer before radioshack closes tonight.

So anyways, for the power to screen on my NES I had to purchase to capacitors. i purchased to metal something ones, they came in blue rectangles and were shaped like a sign with two posts (the leads). When I got home I noticed the ones in the book had a + and - meaning they are electrolytic capacitors I think. Is it going to matter? Is it crucial that I go out and purchase the ones with polar ends or can I use these as long as they are of the right rating? (.1 uf and 1 uf) Thanks.

doctorjames · Post by **doctorjames** » Fri Mar 17, 2006 12:06 am

As long as they are the right rating, and you hook it up right, it won't matter.

codeman · Post by **codeman** » Fri Mar 17, 2006 5:16 pm

yeah, dont worry about it. The ones you got were polyester film capacitors instead of electrolytic. The only reason electrolytic capacitors are polarized is because of the dielectric they have inside, if it's installed backwards they blow up. The ones you got are fine to be installed either way

Ghost2520 · Post by **Ghost2520** » Fri Mar 17, 2006 6:11 pm

Well I didn't receive a reply last night and radioshack was closing so I ran down there and all the had were UNPOLARIZED electrolytic. So I just used the ones I had and called it good. It sorta worked. (see other thread)