Amps
[Top] [All Lists]

[AMPS] Ripple current ratings of high voltage caps.

To: <amps@contesting.com>
Subject: [AMPS] Ripple current ratings of high voltage caps.
From: phil@vaxxine.com (Phil T. (VE3OZZ))
Date: Fri, 05 Mar 1999 13:43:55
Excellent.  Now we know for sure.  Thank you John.

At 05:09 AM 3/5/99 -0500, you wrote:
>
>Message text written by Rich Measures
>
>>As I understand it, the lifespan of an electrolytic capacitor approx.
>doubles for each ten degrees C below its rated operating temp.  --  
>provided that the temp. stays above the minimum allowable.<
>
>>From an STC application note:
>
>"Reducing the element temperature greatly extends the life of the
>electrolytic capacitor. A component which is endurance tested for 1000
>hours with an element temperature of 85C can have a life expectancy of
>100,000 hours at an element temperature of 40C...The leakage current
>follows a logarithmic law, approximately doubling for each 10C increase in
>temperature."
>
>>From an RS Components application note:
>
>"As a rule of thumb, the useful life of an electrolytic capacitor can be
>considered to reduce by a factor of 2 for each 10C increase in operating
>temperature..." 
>
>John Nelson
>GW4FRX
>
>
>
>--
>FAQ on WWW:               http://www.contesting.com/ampfaq.html
>Submissions:              amps@contesting.com
>Administrative requests:  amps-REQUEST@contesting.com
>Problems:                 owner-amps@contesting.com
>Search:                   http://www.contesting.com/km9p/search.htm
>
>
>


--
FAQ on WWW:               http://www.contesting.com/ampfaq.html
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com
Search:                   http://www.contesting.com/km9p/search.htm


<Prev in Thread] Current Thread [Next in Thread>