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Old 6th December 2012, 03:48 AM   #11
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For whatever reason I don't want to use an ectrolytic ,
The AC ripple that the capacitor will see is very small as it is preceded by a choke and another filter cap. My only concern is the dc rating under a continuos load
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Old 6th December 2012, 05:41 AM   #12
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You were talking about using a motor start capacitor, that is a type of electrolytic capacitor.

Last edited by metalsculptor; 6th December 2012 at 05:44 AM.
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Old 6th December 2012, 05:54 AM   #13
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Sorry. I was under the impression that the capacitor was MKP, metalized polypropylene. I thought that meant non electrolytic. A "film" capacitor, one that doesn't have an electrolyt.
I am getting old, Mea Culpa
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Old 6th December 2012, 09:54 AM   #14
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The link clearly states polypropylene and MKP.
The pic shows MKP.

You really need to get hold of the manufacturer's datasheet and find what the continuous DC rating is for this capacitor.

BTW, the peak voltage of maximum DC + half the ripple, is the maximum voltage that the capacitor must withstand.
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Old 7th December 2012, 04:39 AM   #15
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Looking at the ad it is clearly marked MKP but the compact size and referring to a start capacitor makes me wonder also the package is more like a motor start capacitor than a run capacitor it even has the roll crimp top typical of an electrolytic capacitor. Most polyester or polypropylene capacitors have plastic cases and epoxy end closures with either flying leads or push on terminals.
I would stay away from this without proper documentation.
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Old 7th December 2012, 04:44 AM   #16
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For $12 buks I will buy three and cut one open,
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Old 7th December 2012, 05:17 AM   #17
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That's the spirit. BTW the girl on your avatar is cute.
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Old 7th December 2012, 07:20 AM   #18
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Thanks. She is a crazy "akha" girl I now in chaing mai. I spend some time with her family in the hills, the golden triangle. She is indigenous to the the region. Not Thai, not Burmese, not Lao. But really nice
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Old 7th December 2012, 09:40 AM   #19
AndrewT is offline AndrewT  Scotland
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Quote:
cut one open
and if it's a fake then report then to the relevant authorities with the intention of shutting down their business.
The Credit Card companies are a very strong tool to use against fraudulent Vendors.
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Old 7th December 2012, 12:23 PM   #20
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Akha, that's a new one, my first impression was that she was Hmong so not far off.
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