Will a Polyester Film Capacitor Work for Motor?
04-18-2007, 12:47 PM
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Will a Polyester Film Capacitor Work for Motor?
Hi All,
I cracked a motor capacitor and went to radio shack to buy a .01uF capacitor but they didn't have one that looked the same in that size. I bought one that was a .01uF but it is a Polyester Film Capacitor. It is a green rectangle instead of a yellow oval. Is that going to matter? Thanks
Stro
I cracked a motor capacitor and went to radio shack to buy a .01uF capacitor but they didn't have one that looked the same in that size. I bought one that was a .01uF but it is a Polyester Film Capacitor. It is a green rectangle instead of a yellow oval. Is that going to matter? Thanks
Stro
04-22-2007, 09:45 PM
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RE: Will a Polyester Film Capacitor Work for Motor?
Hey Stro,
There are really only two things you have to consider with a capacitor, besides the capacitance. They are voltage rating and polarity. By definition, capactors don't carry any current. I'm sure it can handle 12 volts, but check the specs for good measure. I don't think the polyester film has a polarity, but electrolytics and tantalums have a little "+" sign near one lead and they'll pop if you get them backwards. Otherwise, I'd think you could hardly do any damage by giving it a try.
Cheers,
Bruce
There are really only two things you have to consider with a capacitor, besides the capacitance. They are voltage rating and polarity. By definition, capactors don't carry any current. I'm sure it can handle 12 volts, but check the specs for good measure. I don't think the polyester film has a polarity, but electrolytics and tantalums have a little "+" sign near one lead and they'll pop if you get them backwards. Otherwise, I'd think you could hardly do any damage by giving it a try.
Cheers,
Bruce
04-23-2007, 10:12 AM
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RE: Will a Polyester Film Capacitor Work for Motor?
Thanks Bruce,
I noticed when installing it that it didn't have a polarity and wondered if that was the difference. It is rated for 30 volts and so far I haven't had a problem with it. I'm wondering if the intermittent drop outs I was experiencing before were due to that old capacitor being cracked because since replacing it, it hadn't happened once.
Stro
I noticed when installing it that it didn't have a polarity and wondered if that was the difference. It is rated for 30 volts and so far I haven't had a problem with it. I'm wondering if the intermittent drop outs I was experiencing before were due to that old capacitor being cracked because since replacing it, it hadn't happened once.
Stro
