600VAC 40uf cap source

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600VAC 40uf cap source

Postby Blair » Thu Apr 04, 2013 10:05 am

I'm not sure if this if of interest to anyone here, but these are new and at a good price:

http://www.surpluscenter.com/item.asp?i ... e=electric

I have bought stuff from them in the past and they are good folks. At $5.99, you can't go wrong for 40uf at 600v.

Just thought I'd share.
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Re: 600VAC 40uf cap source

Postby Geek » Thu Apr 04, 2013 2:46 pm

Good price!
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Re: 600VAC 40uf cap source

Postby battradio » Thu Apr 04, 2013 3:09 pm

Good price on the cap , but I hate the $3.50 for the Clamp
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Re: 600VAC 40uf cap source

Postby Geek » Thu Apr 04, 2013 3:17 pm

battradio wrote:Good price on the cap , but I hate the $3.50 for the Clamp


How handy are you with metal, Mark? ;)
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Re: 600VAC 40uf cap source

Postby nyazzip » Thu Apr 04, 2013 4:31 pm

just out of curiosity, besides values, what are the differences between "start" and "run" caps....? or are there any?
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Re: 600VAC 40uf cap source

Postby Geek » Thu Apr 04, 2013 4:39 pm

Start caps are electrolytic. They are used for a very short period of time and the high losses of the dielectric aren't a problem. Used as a PSU cap, they can go *BOOM!* =:o

Run caps are normally polypropylene or PIO.

HOWEVER - they are good below 400Hz (PSU's)... their internal construction makes them not broadband without derating (at 20KHz for example, they can arc-around their dielectric at the edges internally).

Cheers!
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Re: 600VAC 40uf cap source

Postby DeathRex » Thu Apr 04, 2013 5:28 pm

How much DC can they handle?
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Re: 600VAC 40uf cap source

Postby Blair » Thu Apr 04, 2013 5:44 pm

You know I would never buy a metal clamp;)

Typically, if it will do a voltage AC, the DC rating is a bit higher. Not sure on these though.

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Re: 600VAC 40uf cap source

Postby battradio » Fri Apr 05, 2013 11:37 pm

600Volt AC X 1.414 = 848.4 DC volts call it 800 to be on the safe side
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