Vasile Surducan <piclist9 <at> gmail.com> writes:

> b) is the most plausible

And also, the internal resistance changes with temperature. Usually higher
temperature = lower internal resistance (because the electrolyte's conductivity
increases faster than the lead resistivity). However, a new in spec capacitor
will perform as per the datasheet over temperature. Another parameter to pay
attention to is self resonant frequency. This can be in range for many smpsus.
The result can be very bad.
 
> NEVER EVER believe entirely the producer datasheet, any producer will
> be. The producer is a humble human being. The datasheet writer also.
> And the user too.

Oh, so you mean datasheets are like game quiz forms where the user must guess
which parameters are grossly exaggerated (250A peak in TO220 Mosfet), impossible
to achieve in normal operation (Vpor = Vss) etc etc and win a pat on the back
from oneself ? Hmm, I have seen that before somewhere. But where ?

Peter P. 


-- 
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist